diff --git a/.github/workflows/build-pr.yml b/.github/workflows/build-pr.yml
index 0d37793fd3..b8d048d805 100644
--- a/.github/workflows/build-pr.yml
+++ b/.github/workflows/build-pr.yml
@@ -46,7 +46,7 @@ jobs:
       - run: sh -x build.sh verify-osx
 
   osx-16:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test osx on Xcode 16
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.app/Contents/Developer'
@@ -55,7 +55,7 @@ jobs:
       - run: sh -x build.sh verify-osx
 
   osx-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test osx on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -64,7 +64,7 @@ jobs:
       - run: sh -x build.sh verify-osx
 
   osx-encryption-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test osx-encryption on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -82,7 +82,7 @@ jobs:
       - run: sh -x build.sh verify-swiftpm
 
   swiftpm-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test swiftpm on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -109,7 +109,7 @@ jobs:
       - run: sh -x build.sh verify-swiftpm-debug
 
   swiftpm-debug-16:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test swiftpm-debug on Xcode 16
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.app/Contents/Developer'
@@ -118,7 +118,7 @@ jobs:
       - run: sh -x build.sh verify-swiftpm-debug
 
   swiftpm-debug-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test swiftpm-debug on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -127,7 +127,7 @@ jobs:
       - run: sh -x build.sh verify-swiftpm-debug
 
   swiftpm-address-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test swiftpm-address on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -136,7 +136,7 @@ jobs:
       - run: sh -x build.sh verify-swiftpm-address
 
   swiftpm-thread-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test swiftpm-thread on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -154,7 +154,7 @@ jobs:
       - run: sh -x build.sh verify-ios-static
 
   ios-static-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test ios-static on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -172,7 +172,7 @@ jobs:
       - run: sh -x build.sh verify-ios
 
   ios-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test ios on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -190,7 +190,7 @@ jobs:
       - run: sh -x build.sh verify-watchos
 
   watchos-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test watchos on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -208,7 +208,7 @@ jobs:
       - run: sh -x build.sh verify-tvos
 
   tvos-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test tvos on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -226,7 +226,7 @@ jobs:
       - run: sh -x build.sh verify-visionos
 
   visionos-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test visionos on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -253,7 +253,7 @@ jobs:
       - run: sh -x build.sh verify-osx-swift
 
   osx-swift-16:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test osx-swift on Xcode 16
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.app/Contents/Developer'
@@ -262,7 +262,7 @@ jobs:
       - run: sh -x build.sh verify-osx-swift
 
   osx-swift-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test osx-swift on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -280,7 +280,7 @@ jobs:
       - run: sh -x build.sh verify-ios-swift
 
   ios-swift-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test ios-swift on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -298,7 +298,7 @@ jobs:
       - run: sh -x build.sh verify-tvos-swift
 
   tvos-swift-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test tvos-swift on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -307,7 +307,7 @@ jobs:
       - run: sh -x build.sh verify-tvos-swift
 
   osx-swift-evolution-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test osx-swift-evolution on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -316,7 +316,7 @@ jobs:
       - run: sh -x build.sh verify-osx-swift-evolution
 
   ios-swift-evolution-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test ios-swift-evolution on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -325,7 +325,7 @@ jobs:
       - run: sh -x build.sh verify-ios-swift-evolution
 
   tvos-swift-evolution-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test tvos-swift-evolution on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -343,7 +343,7 @@ jobs:
       - run: sh -x build.sh verify-catalyst
 
   catalyst-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test catalyst on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -361,7 +361,7 @@ jobs:
       - run: sh -x build.sh verify-catalyst-swift
 
   catalyst-swift-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test catalyst-swift on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -370,7 +370,7 @@ jobs:
       - run: sh -x build.sh verify-catalyst-swift
 
   xcframework-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test xcframework on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -397,7 +397,7 @@ jobs:
       - run: sh -x build.sh verify-cocoapods-osx
 
   cocoapods-osx-16:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test cocoapods-osx on Xcode 16
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.app/Contents/Developer'
@@ -406,7 +406,7 @@ jobs:
       - run: sh -x build.sh verify-cocoapods-osx
 
   cocoapods-osx-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test cocoapods-osx on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -415,7 +415,7 @@ jobs:
       - run: sh -x build.sh verify-cocoapods-osx
 
   cocoapods-ios-static-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test cocoapods-ios-static on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -424,7 +424,7 @@ jobs:
       - run: sh -x build.sh verify-cocoapods-ios-static
 
   cocoapods-ios-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test cocoapods-ios on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -433,7 +433,7 @@ jobs:
       - run: sh -x build.sh verify-cocoapods-ios
 
   cocoapods-watchos-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test cocoapods-watchos on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -442,7 +442,7 @@ jobs:
       - run: sh -x build.sh verify-cocoapods-watchos
 
   cocoapods-tvos-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test cocoapods-tvos on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -451,7 +451,7 @@ jobs:
       - run: sh -x build.sh verify-cocoapods-tvos
 
   cocoapods-catalyst-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test cocoapods-catalyst on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
@@ -460,7 +460,7 @@ jobs:
       - run: sh -x build.sh verify-cocoapods-catalyst
 
   ios-swiftui-16_1_beta_2:
-    runs-on: macos-14
+    runs-on: macos-15
     name: Test ios-swiftui on Xcode 16.1_beta_2
     env:
       DEVELOPER_DIR: '/Applications/Xcode_16.1_beta_2.app/Contents/Developer'
diff --git a/.github/workflows/master-push.yml b/.github/workflows/master-push.yml
index 1f4a666c78..fdbcd61797 100644
--- a/.github/workflows/master-push.yml
+++ b/.github/workflows/master-push.yml
@@ -8,8 +8,8 @@ on:
 env:
   XCODE_VERSION: "['15.3', '15.4', '16', '16.1_beta_2']"
   PLATFORM: "['ios', 'osx', 'watchos', 'tvos', 'catalyst', 'visionos']"
-  DOC_VERSION: '15.4'
   RELEASE_VERSION: '15.4'
+  DEVELOPER_DIR: /Applications/Xcode_15.4.app/Contents/Developer
 jobs:
   prepare:
       runs-on: ubuntu-latest
@@ -38,8 +38,6 @@ jobs:
         - uses: ruby/setup-ruby@v1
           with:
             bundler-cache: true
-        - name: Select Xcode Version
-          run: sudo xcode-select -switch /Applications/Xcode_${{ env.DOC_VERSION }}.app
         - name: Prepare docs for packaging
           run: bundle exec sh -x build.sh release-package-docs
         - name: Upload docs to artifacts library
@@ -61,15 +59,23 @@ jobs:
             name: realm-examples
             path: realm-examples.zip
   build-product: # Creates framework for each platform, xcode version, target and configuration
-      runs-on: macos-14
       name: Package framework
       needs: prepare
       strategy:
-        max-parallel: 20 # Blocks of 20, therefore if any of the build fails, we don't get a lot of XCode Clouds builds hanging, which are expensive.
+        max-parallel: 20
         matrix:
           platform: ${{ fromJSON(needs.prepare.outputs.PLATFORM_MATRIX) }}
           xcode-version: ${{ fromJSON(needs.prepare.outputs.XCODE_VERSIONS_MATRIX) }}
           configuration: [swift, static]
+          include:
+            - xcode-version: 15.3
+              os: macos-14
+            - xcode-version: 15.4
+              os: macos-14
+            - xcode-version: 16
+              os: macos-15
+            - xcode-version: 16.1_beta_2
+              os: macos-15
           exclude:
             - platform: osx
               configuration: static
@@ -81,79 +87,38 @@ jobs:
               configuration: static
             - platform: catalyst
               configuration: static
-            - platform: visionos
-              xcode-version: 15.1
+      runs-on: ${{ matrix.os }}
+      env:
+        DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode-version }}.app/Contents/Developer
       steps:
         - uses: actions/checkout@v4
+        - name: Download visionOS
+          if: matrix.platform == 'visionos' && matrix.os == 'macos-14'
+          run: xcodebuild -downloadPlatform visionOS
         - name: Build ${{ matrix.platform }} with Xcode ${{ matrix.xcode-version }}
-          run: DEVELOPER_DIR=/Applications/Xcode_${{ matrix.xcode-version }}.app/Contents/Developer sh build.sh ${{ matrix.platform }}-${{matrix.configuration}}
+          run: sh build.sh ${{ matrix.platform }}-${{matrix.configuration}}
         - run: rm -r build/DerivedData
         - name: Upload framework
-          uses: actions/upload-artifact@v4
+          uses: eXhumer/upload-artifact@0b7d5f5684d3f642f978d2faad9ade64f5b4dd57
           with:
             name: build-${{ matrix.platform }}-${{ matrix.xcode-version }}-${{ matrix.configuration }}
             path: build
             compression-level: 1
-  package-xcframework-platform: # Creates xcframework for each platform and xcode version
-      runs-on: macos-14
-      name: Package xcframework for platform
-      needs: [build-product, prepare]
-      strategy:
-        matrix:
-          platform: ${{ fromJSON(needs.prepare.outputs.PLATFORM_MATRIX) }}
-          xcode-version: ${{ fromJSON(needs.prepare.outputs.XCODE_VERSIONS_MATRIX) }}
-          exclude:
-            - platform: visionos
-              xcode-version: 15.1
-      steps:
-        - uses: actions/checkout@v4
-        - name: Select Xcode Version
-          run: sudo xcode-select -switch /Applications/Xcode_${{ env.RELEASE_VERSION }}.app
-        - name: Install the Apple certificate and provisioning profile
-          env:
-            DEVELOPMENT_CERTIFICATE_BASE64: ${{ secrets.DEVELOPMENT_CERTIFICATE_BASE64 }}
-            P12_PASSWORD: ${{ secrets.P12_PASSWORD }}
-            KEYCHAIN_PASSWORD: ${{ secrets.KEYCHAIN_PASSWORD }}
-          run: |
-            sh -x build.sh install-apple-certificates
-        - name: Restore frameworks
-          uses: actions/download-artifact@v4
-          with:
-            pattern: build-${{ matrix.platform }}*-${{ matrix.xcode-version }}-*
-        - name: Create xcframework
-          env:
-            SIGNING_IDENTITY: ${{ secrets.SIGNING_IDENTITY }}
-          run: |
-            sh -x build.sh release-create-xcframework-${{ matrix.xcode-version }} ${{ matrix.platform }}
-        - name: Upload xcframework
-          uses: actions/upload-artifact@v4
-          with:
-            name: realm-${{ matrix.platform }}-${{ matrix.xcode-version }}
-            path: realm-${{ matrix.platform }}-${{ matrix.xcode-version }}.zip
-  package-release: # Creates xcframework for each platform and xcode version
+            follow-symlinks: false
+  package-release:
       runs-on: macos-14
       name: Package release file
-      needs: [package-xcframework-platform, prepare]
+      needs: [build-product, prepare]
       steps:
         - uses: actions/checkout@v4
-        - name: Select Xcode Version
-          run: sudo xcode-select -switch /Applications/Xcode_${{ env.RELEASE_VERSION }}.app
-        - name: Install the Apple certificate and provisioning profile
-          env:
-            DEVELOPMENT_CERTIFICATE_BASE64: ${{ secrets.DEVELOPMENT_CERTIFICATE_BASE64 }}
-            P12_PASSWORD: ${{ secrets.P12_PASSWORD }}
-            KEYCHAIN_PASSWORD: ${{ secrets.KEYCHAIN_PASSWORD }}
-          run: |
-            sh -x build.sh install-apple-certificates
         - name: Restore packages xcframeworks
           uses: actions/download-artifact@v4
           with:
-            pattern: realm-*
+            pattern: build-*
         - name: Create release
           env:
             SIGNING_IDENTITY: ${{ secrets.SIGNING_IDENTITY }}
-          run: |
-            sh -x build.sh release-package
+          run: sh -x build.sh release-package
         - name: Upload release artifactss
           uses: actions/upload-artifact@v4
           with:
@@ -170,8 +135,6 @@ jobs:
       needs: [package-release, prepare]
       steps:
         - uses: actions/checkout@v4
-        - name: Select Xcode Version
-          run: sudo xcode-select -switch /Applications/Xcode_${{ env.RELEASE_VERSION }}.app
         - name: Restore release
           uses: actions/download-artifact@v4
           with:
@@ -184,8 +147,6 @@ jobs:
       needs: package-release
       steps:
         - uses: actions/checkout@v4
-        - name: Select Xcode Version
-          run: sudo xcode-select -switch /Applications/Xcode_${{ env.RELEASE_VERSION }}.app
         - name: Test ios static
           run: sh -x build.sh test-ios-static
   test-osx-static:
@@ -194,8 +155,6 @@ jobs:
       needs: package-release
       steps:
         - uses: actions/checkout@v4
-        - name: Select Xcode Version
-          run: sudo xcode-select -switch /Applications/Xcode_${{ env.RELEASE_VERSION }}.app
         - name: Test osx static
           run: |
             export REALM_DISABLE_METADATA_ENCRYPTION=1
@@ -226,8 +185,9 @@ jobs:
         - uses: ruby/setup-ruby@v1
           with:
             bundler-cache: true
-        - name: Select Xcode Version
-          run: sudo xcode-select -switch /Applications/Xcode_${{ env.RELEASE_VERSION }}.app
+        - name: Download visionOS
+          if: matrix.platform == 'visionos' && matrix.os == 'macos-14'
+          run: xcodebuild -downloadPlatform visionOS
         - name: Restore release
           uses: actions/download-artifact@v4
           if: ${{ matrix.installation == 'xcframework' }}
@@ -244,21 +204,29 @@ jobs:
             cd examples/installation
             bundle exec ./build.rb ${{ matrix.platform }} ${{ matrix.installation }} ${{ matrix.linkage }}
   test-installation-xcframework:
-      runs-on: macos-14
       name: Run installation test for xcframework
       needs: [package-release, prepare]
-      env:
-        PLATFORM: 'osx'
       strategy:
         matrix:
           xcode-version: ${{ fromJSON(needs.prepare.outputs.XCODE_VERSIONS_MATRIX) }}
+          include:
+            - xcode-version: 15.3
+              os: macos-14
+            - xcode-version: 15.4
+              os: macos-14
+            - xcode-version: 16
+              os: macos-15
+            - xcode-version: 16.1_beta_2
+              os: macos-15
+      env:
+        PLATFORM: 'osx'
+        DEVELOPER_DIR: /Applications/Xcode_${{ matrix.xcode-version }}.app/Contents/Developer
+      runs-on: ${{ matrix.os }}
       steps:
         - uses: actions/checkout@v4
         - uses: ruby/setup-ruby@v1
           with:
             bundler-cache: true
-        - name: Select Xcode Version
-          run: sudo xcode-select -switch /Applications/Xcode_${{ matrix.xcode-version }}.app
         - name: Restore release
           uses: actions/download-artifact@v4
           with:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5d8ece24fd..79b0277549 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,7 +12,7 @@ x.y.z Release notes (yyyy-MM-dd)
 ### Compatibility
 * Realm Studio: 15.0.0 or later.
 * APIs are backwards compatible with all previous releases in the 10.x.y series.
-* Carthage release for Swift is built with Xcode 15.4.0.
+* Carthage release for Swift is built with Xcode 1a.0.0.
 * CocoaPods: 1.10 or later.
 * Xcode: 15.3.0-16.1 beta.
 
diff --git a/build.sh b/build.sh
index d4e32654d1..94ee252159 100755
--- a/build.sh
+++ b/build.sh
@@ -200,89 +200,12 @@ build_combined() {
         -framework "$os_path" "${simulator_framework[@]}"
 }
 
-# To be used with Github actions runner
-build_platform() {
-    local product="$1"
-    local platform="$2"
-    local config="$CONFIGURATION"
-
-    local destination build_args config_suffix
-    case "$platform" in
-        osx)
-            config_suffix=
-            destination='generic/platform=macOS'
-            ;;
-        ios)
-            config_suffix=-iphoneos
-            destination='generic/platform=iOS'
-            ;;
-        watchos)
-            config_suffix=-watchos
-            destination='generic/platform=watchOS'
-            ;;
-        tvos)
-            config_suffix=-appletvos
-            destination='generic/platform=tvOS'
-            ;;
-        visionos)
-            config_suffix=-xros
-            destination='generic/platform=visionOS'
-            ;;
-        catalyst)
-            config_suffix=-maccatalyst
-            destination='generic/platform=macOS,variant=Mac Catalyst'
-            ;;
-        osx)
-            destination='generic/platform=macOS'
-            ;;
-        iossimulator)
-            config_suffix=-iphonesimulator
-            destination='generic/platform=iOS'
-            ;;
-        watchossimulator)
-            config_suffix=-watchsimulator
-            destination='generic/platform=watchOS'
-            ;;
-        tvossimulator)
-            config_suffix=-appletvsimulator
-            destination='generic/platform=tvOS'
-            ;;
-        visionossimulator)
-            config_suffix=-xrsimulator
-            destination='generic/platform=visionOS'
-            ;;
-    esac
-
-    build_products_path="$DERIVED_DATA/Realm/Build/Products"
-    build_path="$build_products_path/$config${config_suffix}"
-
-    build_args=(-scheme "$product" -configuration "$config" build REALM_HIDE_SYMBOLS=YES)
-
-    if [[ "$platform" = *"simulator" ]]; then
-        xc -destination "$destination Simulator" "${build_args[@]}"
-    else
-        xc -destination "$destination" "${build_args[@]}"
-    fi
-
-    # This is only for test, and simulates how it is packaged by XCode Cloud
-    number="$((10000 + $RANDOM % 99999))"
-    folder_name="RealmSwift Build $number Build Products for $product on iOS"
-    dir="$folder_name/$config${config_suffix}"
-    mkdir -p "$dir"
-    cp -a "$build_path/." "$dir"
-
-    config_name="$(tr [A-Z] [a-z] <<< "$config")"
-    zip -r product.zip "$dir"
-    rm -rf "$folder_name"
-}
-
 create_xcframework() {
     local product="$1"
     local config="$2"
-    local platform="$3"
 
-    local out_path="$ROOT_WORKSPACE/$config/$platform/$product.xcframework"
-    find "$ROOT_WORKSPACE" -path "*/$config*/$product.framework" \
+    local out_path="$ROOT_WORKSPACE/$config/$product.xcframework"
+    find "$ROOT_WORKSPACE"/build-*/"$config" -name "$product.framework" \
         | sed 's/.*/-framework &/' \
         | xargs xcodebuild -create-xcframework -allow-internal-distribution -output "$out_path"
     codesign --timestamp -s "$SIGNING_IDENTITY" "$out_path"
@@ -310,6 +233,14 @@ plist_get() {
     /usr/libexec/PlistBuddy -c "Print :$2" "$1" 2> /dev/null
 }
 
+iphone_name() {
+    if (( $(xcode_version_major) < 16 )); then
+        echo 'iPhone 14'
+    else
+        echo 'iPhone 16'
+    fi
+}
+
 ######################################
 # Device Test Helper
 ######################################
@@ -519,11 +450,7 @@ case "$COMMAND" in
     "xcframework")
         # Build all of the requested frameworks
         shift
-        if (( $(xcode_version_major) < 15 )); then
-            PLATFORMS="${*:-osx ios watchos tvos catalyst}"
-        else
-            PLATFORMS="${*:-osx ios watchos tvos catalyst visionos}"
-        fi
+        PLATFORMS="${*:-osx ios watchos tvos catalyst visionos}"
         for platform in $PLATFORMS; do
             sh build.sh "$platform-swift"
         done
@@ -591,12 +518,12 @@ case "$COMMAND" in
         ;;
 
     "test-ios")
-        xctest Realm -configuration "$CONFIGURATION" -sdk iphonesimulator -destination 'name=iPhone 14'
+        xctest Realm -configuration "$CONFIGURATION" -sdk iphonesimulator -destination "name=$(iphone_name)"
         exit 0
         ;;
 
     "test-ios-swift")
-        xctest RealmSwift -configuration "$CONFIGURATION" -sdk iphonesimulator -destination 'name=iPhone 14'
+        xctest RealmSwift -configuration "$CONFIGURATION" -sdk iphonesimulator -destination "name=$(iphone_name)"
         exit 0
         ;;
 
@@ -665,7 +592,7 @@ case "$COMMAND" in
         ;;
 
     "test-ios-swiftui")
-        xctest 'SwiftUITestHost' -configuration "$CONFIGURATION" -sdk iphonesimulator -destination 'name=iPhone 14'
+        xctest 'SwiftUITestHost' -configuration "$CONFIGURATION" -sdk iphonesimulator -destination "name=$(iphone_name)"
         exit 0
         ;;
 
@@ -1062,6 +989,10 @@ case "$COMMAND" in
         export sha="$BRANCH"
         export REALM_EXTRA_BUILD_ARGUMENTS='GCC_GENERATE_DEBUGGING_SYMBOLS=NO -allowProvisioningUpdates'
         target=$(echo "$CI_WORKFLOW" | cut -f1 -d_)
+        if [[ "$target" == visionos ]] && (( $(xcode_version_major) < 16 )); then
+            echo 'Installing visionOS'
+            xcodebuild -downloadPlatform visionOS
+        fi
         sh build.sh "verify-$target"
         ;;
 
@@ -1079,29 +1010,10 @@ case "$COMMAND" in
         zip -r docs/realm-docs.zip docs/objc_output docs/swift_output
         ;;
 
-    release-create-xcframework-*)
-        platform="$2"
-        xcode_version=$(echo "$COMMAND" | cut -d- -f4)
-
-        find . -name 'build-*.zip' -exec unzip {} \;
-
-        create_xcframework Realm Release "$platform"
-        create_xcframework RealmSwift Release "$platform"
-
-        if [ "$platform" = "ios" ]; then
-            create_xcframework Realm Static "$platform"
-        else
-            mkdir -p "Static/$platform"
-        fi
-
-        zip --symlinks -r "realm-$platform-$xcode_version.zip" "Release/$platform" "Static/$platform"
-        exit 0
-        ;;
-
     "release-package")
         version="$(sed -n 's/^VERSION=\(.*\)$/\1/p' "${source_root}/dependencies.list")"
-        find . -name 'realm-*-1*' -maxdepth 1 \
-            | sed 's@./realm-[a-z]*-\(.*\)@\1@' \
+        find . -name 'build-*-1*' -maxdepth 1 \
+            | sed 's@./build-[a-z]*-\(.*\)-.*@\1@' \
             | sort -u --version-sort \
             | xargs ./scripts/create-release-package.rb "${ROOT_WORKSPACE}/pkg" "${version}"
         ;;
@@ -1152,90 +1064,6 @@ case "$COMMAND" in
     # Release tests
     ######################################
 
-    # Should select xcode version `xcode-select` first.
-    # Pass xcode version as argument
-    # This simulates what is done in XCode Cloud
-    "test-create-frameworks")
-        xcode_version="$2"
-        targets="Realm RealmSwift"
-
-        platforms=("ios" "iossimulator" "osx" "tvos" "tvossimulator" "watchos" "watchossimulator" "catalyst")
-        if [ "$xcode_version" == "15.2" ]; then
-            platforms+=("visionos" "visionossimulator")
-        fi
-
-        for platform in "${platforms[@]}"; do
-            for target in $targets; do
-                echo "Building $platform and $target release"
-                ./build.sh "release-package-$platform-$xcode_version-$target-release"
-                ./build.sh "release-build_$platform-$xcode_version-$target-release"
-
-                # Only generates Realm framework for Static configuration and ios platform
-                if [[ "$platform" == "ios"  || "$platform" == "iossimulator" ]] && [[ "$target" == "Realm" ]]; then
-                    echo "Building $platform and $target static"
-                    ./build.sh "release-package-$platform-$xcode_version-$target-static"
-                    ./build.sh "release-package-build_$platform-$xcode_version-$target-static"
-                fi
-            done
-        done
-        ;;
-
-    "test-build-product-workflow-xcode-cloud")
-        issuer_id=""
-        key_id=""
-        pk_path=""
-
-        token=$(ruby ./scripts/xcode_cloud_helper.rb --issuer-id $issuer_id --key-id $key_id --pk-path $pk_path get-token)
-        echo "Authentication token -> $token"
-
-        # Test parameters
-        platform="ios"
-        target="RealmSwift"
-        xcode_version="15.2"
-        configuration="release"
-
-        workflow_id=$(ruby ./scripts/xcode_cloud_helper.rb create-workflow release-package-build $platform $xcode_version $target $configuration -t $token)
-        echo "Created workflow -> $workflow_id"
-        build_run_id=$(ruby ./scripts/xcode_cloud_helper.rb build-workflow $workflow_id dp/new_migration_branch -t $token)
-        echo "Build Run -> $build_run_id"
-        while [ "$status" != 'COMPLETE' ]
-        do
-            token=$(ruby ./scripts/xcode_cloud_helper.rb --issuer-id $issuer_id --key-id $key_id --pk-path $pk_path get-token)
-            status=$(ruby ./scripts/xcode_cloud_helper.rb get-build-status $build_run_id -t $token)
-            echo "Status $status" | ts
-            sleep 20
-        done
-        completion_status=$(ruby ./scripts/xcode_cloud_helper.rb get-build-result $build_run_id -t $token)
-        echo "Completion Status $completion_status" | ts
-        if [ "$completion_status" != 'SUCCEEDED' ]; then
-            echo "XCode build failed"
-            ruby ./scripts/xcode_cloud_helper.rb print-build-logs $build_run_id -t $token
-            exit 1
-        fi
-
-        ruby ./scripts/xcode_cloud_helper.rb print-build-logs $build_run_id -t $token
-        ruby ./scripts/xcode_cloud_helper.rb download-artifact $build_run_id -t $token
-        ruby ./scripts/xcode_cloud_helper.rb delete-workflow $workflow_id -t $token
-        ;;
-
-    # Pass xcode version as argument
-    # For this to work, product builds should be located in the root of the project
-    "test-create-platform-xcframeworks")
-        xcode_version="$2"
-
-        platforms=("ios" "osx" "tvos" "watchos" "catalyst")
-        if [ "$xcode_version" == "15.1" ]; then
-            platforms+=("visionos")
-        fi
-
-        for platform in "${platforms[@]}"; do
-            ./build.sh release-create-xcframework_$xcode_version $platform
-
-            rm -rf "$ROOT_WORKSPACE/Release"
-            rm -rf "$ROOT_WORKSPACE/Static"
-        done
-        ;;
-
     "test-package-examples")
         VERSION="$(sed -n 's/^VERSION=\(.*\)$/\1/p' "${source_root}/dependencies.list")"
         dir="realm-swift-${VERSION}"
@@ -1261,22 +1089,6 @@ case "$COMMAND" in
         sh build.sh examples-tvos-swift
         ;;
 
-     # This is used for test or if we want to use Github Actions to build each framework
-    release-package-build_*)
-        filename="Configuration/Release.xcconfig"
-        sed -i '' "s/REALM_HIDE_SYMBOLS = NO;/REALM_HIDE_SYMBOLS = YES;/" "$filename"
-
-        # Remove the identifier of the command, so we can obtain the parameters from the command
-        build_command=${COMMAND#"release-package-build_"}
-        parameters=(${build_command//-/ })
-
-        platform=${parameters[0]}
-        target=${parameters[1]}
-
-        build_platform "$target" "$platform"
-        exit 0
-        ;;
-
     ######################################
     # Publish
     ######################################
@@ -1356,7 +1168,7 @@ x.y.z Release notes (yyyy-MM-dd)
 ### Compatibility
 * Realm Studio: 15.0.0 or later.
 * APIs are backwards compatible with all previous releases in the 10.x.y series.
-* Carthage release for Swift is built with Xcode 15.4.0.
+* Carthage release for Swift is built with Xcode 16.0.0.
 * CocoaPods: 1.10 or later.
 * Xcode: 15.3.0-16.1 beta.
 
diff --git a/scripts/create-release-package.rb b/scripts/create-release-package.rb
index 57307c2a70..c28928c510 100755
--- a/scripts/create-release-package.rb
+++ b/scripts/create-release-package.rb
@@ -12,7 +12,7 @@
 ROOT = Pathname(__FILE__).+('../..').expand_path
 BUILD_SH = Pathname(__FILE__).+('../../build.sh').expand_path
 VERBOSE = false
-OBJC_XCODE_VERSION = XCODE_VERSIONS.last
+OBJC_XCODE_VERSION = '16'
 
 def sh(*args)
   puts "executing: #{args.join(' ')}" if VERBOSE
@@ -29,10 +29,11 @@ def platforms(xcode_version)
 
 def create_xcframework(root, xcode_version, configuration, name)
   signing_identity = ENV['SIGNING_IDENTITY']
-  prefix = "#{root}/#{xcode_version}"
-  output = "#{prefix}/#{configuration}/#{name}.xcframework"
-  files = Dir.glob "#{prefix}/#{configuration}/*/#{name}.xcframework/*/#{name}.framework"
+  output = "#{root}/#{xcode_version}/#{configuration}/#{name}.xcframework"
+  files = Dir.glob "#{ROOT}/build-*-#{xcode_version}-*/#{configuration}/*/#{name}.xcframework/*/#{name}.framework"
+  puts files
 
+  FileUtils.mkdir_p "#{root}/#{xcode_version}"
   sh 'xcodebuild', '-create-xcframework', '-allow-internal-distribution',
      '-output', output, *files.flat_map {|f| ['-framework', f]}
   sh 'codesign', '--timestamp', '-s', signing_identity, output
@@ -53,16 +54,6 @@ def zip(name, *files)
   # give it the fully resolved path
   tmp = File.realpath tmp
 
-  for version in XCODE_VERSIONS
-    puts "Extracting source binaries for Xcode #{version}"
-    FileUtils.mkdir_p "#{tmp}/#{version}"
-    Dir.chdir("#{tmp}/#{version}") do
-      for platform in platforms(version)
-        sh 'unzip', "#{ROOT}/realm-#{platform}-#{version}/realm-#{platform}-#{version}.zip"
-      end
-    end
-  end
-
   for version in XCODE_VERSIONS
     puts "Creating Swift XCFrameworks for Xcode #{version}"
     create_xcframework tmp, version, 'Release', 'RealmSwift'
@@ -116,11 +107,8 @@ def zip(name, *files)
 Dir.mktmpdir do |tmp|
   tmp = File.realpath tmp
   Dir.chdir(tmp) do
-    for platform in platforms('15.1')
-      sh 'unzip', "#{ROOT}/realm-#{platform}-#{OBJC_XCODE_VERSION}/realm-#{platform}-#{OBJC_XCODE_VERSION}.zip"
-    end
-    create_xcframework tmp, '', 'Release', 'RealmSwift'
-    create_xcframework tmp, '', 'Release', 'Realm'
+    create_xcframework tmp, OBJC_XCODE_VERSION, 'Release', 'RealmSwift'
+    create_xcframework tmp, OBJC_XCODE_VERSION, 'Release', 'Realm'
 
     Dir.chdir('Release') do
       zip 'Carthage.xcframework.zip', 'Realm.xcframework', 'RealmSwift.xcframework'
diff --git a/scripts/pr-ci-matrix.rb b/scripts/pr-ci-matrix.rb
index 491c4360dc..c3c42c5bbb 100755
--- a/scripts/pr-ci-matrix.rb
+++ b/scripts/pr-ci-matrix.rb
@@ -82,9 +82,10 @@ def minimum_version(major)
     if not filter.call(version)
       next
     end
-      output_file << """
+    image = version.start_with?('16') ? 'macos-15' : 'macos-14'
+    output_file << """
   #{name}-#{version.gsub(' ', '_').gsub('.', '_')}:
-    runs-on: macos-14
+    runs-on: #{image}
     name: Test #{name} on Xcode #{version}
     env:
       DEVELOPER_DIR: '/Applications/Xcode_#{version}.app/Contents/Developer'