diff --git a/ArcKit.podspec b/ArcKit.podspec
index 54ad8b48..23c6bbdb 100644
--- a/ArcKit.podspec
+++ b/ArcKit.podspec
@@ -1,14 +1,14 @@
 Pod::Spec.new do |s|
   s.name         = "ArcKit"
-  s.version      = "4.0.0.pre.1"
+  s.version      = "4.0.0"
   s.summary      = "Location and activity recording framework"
   s.homepage     = "https://arc-web.herokuapp.com"
   s.author       = { "Matt Greenfield" => "matt@bigpaua.com" }
   s.license      = { :text => "Copyright 2017 Matt Greenfield. All rights reserved.", 
                      :type => "Commercial" }
-  s.source       = { :git => 'https://github.com/sobri909/ArcKit.git', :tag => '4.0.0.pre.1' }
+  s.source       = { :git => 'https://github.com/sobri909/ArcKit.git', :tag => '4.0.0' }
   s.source_files = 'ArcKit/*'
   s.frameworks   = 'CoreLocation', 'CoreMotion' 
   s.ios.deployment_target = '10.0'
-  s.dependency 'ArcKitCore', '4.0.0.pre.1'
+  s.dependency 'ArcKitCore', '4.0.0'
 end
diff --git a/ArcKitCore.podspec b/ArcKitCore.podspec
index 3a18dd97..21f86720 100644
--- a/ArcKitCore.podspec
+++ b/ArcKitCore.podspec
@@ -1,12 +1,12 @@
 Pod::Spec.new do |s|
   s.name         = "ArcKitCore"
-  s.version      = "4.0.0.pre.1"
+  s.version      = "4.0.0"
   s.summary      = "Location and activity recording framework"
   s.homepage     = "https://arc-web.herokuapp.com"
   s.author       = { "Matt Greenfield" => "matt@bigpaua.com" }
   s.license      = { :text => "Copyright 2017 Matt Greenfield. All rights reserved.", 
                      :type => "Commercial" }
-  s.source       = { :git => 'https://github.com/sobri909/ArcKit.git', :tag => '4.0.0.pre.1' }
+  s.source       = { :git => 'https://github.com/sobri909/ArcKit.git', :tag => '4.0.0' }
   s.frameworks   = 'CoreLocation', 'CoreMotion' 
   s.ios.deployment_target = '10.0'
   s.ios.vendored_frameworks = 'ArcKitCore.framework'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a9da282e..130134d9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## [4.0.0.pre.1] - 2017-11-26
+## [4.0.0] - 2017-11-27
 
 ### Added
 
@@ -8,14 +8,17 @@
   docs for more details.
 - Added ability to disable dynamic desiredAccuracy adjustments. Read the  
   `LocomotionManager.dynamicallyAdjustDesiredAccuracy` API docs for more details.
-- Added LocomotionManager settings for deciding which (if any) Core Motion features to make use of
+- Added LocomotionManager settings for configuring which (if any) Core Motion features to make use of
   whilst recording.
 
 ### Removed
 
-- Core Motion recording is no longer started explicitly with startCoreMotion(). Instead you 
-  should call startRecording(), and use the new Core Motion settings properties to determine 
-  which (if any) Core Motion features should be enabled.  
+- `startCoreLocation()` has been renamed to `startRecording()` and now starts both Core Location 
+  and Core Motion recording (depending on your LocomotionManager settings). Additionally, 
+  `stopCoreLocation()` has been renamed to `stopRecording()`, and `startCoreMotion()` and 
+  `stopCoreMotion()` have been removed. 
+- `recordingCoreLocation` and `recordingCoreMotion` have been removed, and replaced by 
+  `recordingState`. 
 
 ## [3.0.0] - 2017-11-23