Prepare releasenotes for Istio 1.25

Signed-off-by: Faseela K <faseela.k@est.tech>

content/en/docs/releases/supported-releases/index.md

@@ -70,9 +70,9 @@ Please keep up-to-date and use a supported version.
 
 | Minor Releases | Patched versions with no known CVEs |
 |----------------|-------------------------------------|
+| 1.25.x         | 1.25.0+                             |
 | 1.24.x         | 1.24.0+                             |
 | 1.23.x         | 1.23.2+                             |
-| 1.22.x         | 1.22.5+                             |
 
 ## Supported Envoy Versions
 
@@ -82,8 +82,8 @@ The relationship between the two project's versions:
 
 | Istio version | Envoy release branch |
 |---------------|----------------------|
+| 1.25.x        | release/v1.33        |
 | 1.24.x        | release/v1.32        |
 | 1.23.x        | release/v1.31        |
-| 1.22.x        | release/v1.30        |
 
 You can find the precise Envoy commit used by Istio [in the `istio/proxy` repository](https://github.com/istio/proxy/blob/{{< source_branch_name >}}/WORKSPACE#L26): look for the `ENVOY_SHA` variable.

content/en/news/releases/1.25.x/_index.md

@@ -0,0 +1,8 @@
+---
+title: 1.25.x Releases
+description: Announcements for the 1.25 release and its associated patch releases.
+weight: 6
+list_by_publishdate: true
+layout: release-grid
+decoration: dot
+---

content/en/news/releases/1.25.x/announcing-1.25/_index.md

@@ -0,0 +1,35 @@
+---
+title: Announcing Istio 1.25.0
+linktitle: 1.25.0
+subtitle: Major Release
+description: Istio 1.25 Release Announcement.
+publishdate: 2025-02-25
+release: 1.25.0
+aliases:
+- /news/announcing-1.25
+- /news/announcing-1.25.0
+---
+
+We are pleased to announce the release of Istio 1.25. Thank you to all our contributors, testers, users and enthusiasts for helping us get the 1.25.0 release published!
+We would like to thank the Release Managers for this release, **Mike Morris** from Microsoft, **Faseela K** from Ericsson Software Technology, and **Daniel Hawton** from Solo.io.
+
+{{< relnote >}}
+
+{{< tip >}}
+Istio 1.25.0 is officially supported on Kubernetes versions `1.29` to `1.32`.
+{{< /tip >}}
+
+## What’s new?
+
+### Ambient mode enhancements
+
+### DNS auto-allocation improvements
+
+## Upgrading to 1.25
+
+We would like to hear from you regarding your experience upgrading to Istio 1.25. You can provide feedback in the `#release-1.25` channel in our [Slack workspace](https://slack.istio.io/).
+
+Would you like to contribute directly to Istio? Find and join one of our [Working Groups](https://github.com/istio/community/blob/master/WORKING-GROUPS.md) and help us improve.
+
+Attending KubeCon Europe 2025?
+Be sure to stop by the co-located [Istio Day](https://events.linuxfoundation.org/kubecon-cloudnativecon-europe/co-located-events/istio-day/) to catch some great talks, or swing by the [Istio project booth](https://events.linuxfoundation.org/kubecon-cloudnativecon-europe/attend/venue-travel/) to chat.