RelNotes for WebView2 Prerelease SDK 147 (Mar. 2026) (#3741)

* template

* linkfix

* filled in

* bugfix Qs

* inc rvw

* add missing helpers

* preserve-view #member

* link text

* Pre-release first draft

* restore rest of tabset

* not experimental

* add the bullet

* improved PersistentStorage, removed 2 APIs

* del brkchg enum mem name

* exception for phase 2

* move rt anchor to right

* remove dup archive sections

---------

Co-authored-by: vootlasaichandu <V-VCHANDU@microsoft.com>

Author: mikehoffms

microsoft-edge/webview2/concepts/versioning.md

@@ -30,9 +30,9 @@ New APIs are introduced in phases as follows:
 
 | API status | Description |
 |---|---|
-| _Experimental in a Prerelease SDK_ | 1. First an API is Experimental in a Prerelease SDK.  You can test these APIs and provide feedback.  The API isn't in a Release SDK yet. |
+| _Experimental in a Prerelease SDK_ | 1. First an API is Experimental in a Prerelease SDK.  (Sometimes, APIs skip the Experimental phase and are added directly into a Stable in Prerelease SDK.)  You can test these APIs and provide feedback.  The API isn't in a Release SDK yet. |
 | _Stable in a Prerelease SDK_ | 2. Then the API is promoted to Stable in the Prerelease SDK.  The API isn't in a Release SDK yet. |
-| _Stable in a Release SDK_ | 3. Then the Stable API is promoted to be included in the Release SDK.  This typically happens 1 month after the API is promoted to Stable in a Prerelease SDK.  The API also remains in the Prerelease SDK. |
+| _Stable in a Release SDK_ | 3. Then the Stable API is promoted to be included in the Release SDK.  (Sometimes, APIs are simultaneously promoted to Stable in a Prerelease SDK and Stable in a Release SDK.)  This typically happens 1 month after the API is promoted to Stable in a Prerelease SDK.  The API also remains in the Prerelease SDK. |
 
 ![Diagram of phases of introducing new APIs](./versioning-images/phases-of-adding-apis.png)
 <!-- .png is used by webview2/release-notes/about.md and webview2/concepts/versioning.md -->

microsoft-edge/webview2/release-notes/about.md

@@ -31,9 +31,13 @@ New APIs are added in three phases, as follows:
 
 1. APIs are initially introduced as Experimental APIs in a Prerelease SDK package.  In Win32, the type name includes the word "Experimental".
 
+   * Sometimes, APIs skip the Experimental phase and are added directly into a Stable in Prerelease SDK.
+
 1. Then the APIs become Stable APIs in a Prerelease SDK package.  In Win32, the type name omits the word "Experimental".
 
-1. Soon after, the APIs become Stable APIs in a Release SDK package.  Sometimes, APIs are simultaneously promoted to Stable in a Prerelease SDK and Stable in a Release SDK.
+1. Soon after, the APIs become Stable APIs in a Release SDK package.
+
+   * Sometimes, APIs are simultaneously promoted to Stable in a Prerelease SDK and Stable in a Release SDK.
 
 ![Diagram of phases of introducing new APIs](./about-images/phases-of-adding-apis.png)
 <!-- .png is used by webview2/release-notes/about.md and webview2/concepts/versioning.md -->

microsoft-edge/webview2/release-notes/archive.md

@@ -22,7 +22,7 @@ The following features and bug fixes are in the WebView2 Release SDK and Prerele
 
 
 <!-- ====================================================================== -->
-## 1.0.3124.44<!-- Release SDK 134 (Mar. 10, 2025) -->
+## 1.0.3124.44<!-- Release SDK, for Runtime 134 (Mar. 10, 2025) -->
 
 Release Date: Mar. 10, 2025, Runtime 134
 
@@ -48,11 +48,11 @@ No additional APIs have been promoted from Phase 2: Stable in Prerelease, to Pha
 * Disabled background update of network time.  ([Issue #5047](https://github.com/MicrosoftEdge/WebView2Feedback/issues/5047))
 * Fixed the download popup not being displayed when `target="_blank"`.  ([Issue #5063](https://github.com/MicrosoftEdge/WebView2Feedback/issues/5063))
 
-<!-- end of Release SDK 134 (Mar. 10, 2025) -->
+<!-- end of Release SDK 1.0.3124.44, for Runtime 134 (Mar. 10, 2025) -->
 
 
 <!-- ====================================================================== -->
-## 1.0.3171-prerelease<!-- Prerelease SDK 135 (Mar. 10, 2025) -->
+## 1.0.3171-prerelease<!-- Runtime 135 (Mar. 10, 2025) -->
 
 Release Date: Mar. 10, 2025, Runtime 135
 
@@ -99,7 +99,7 @@ No APIs have been promoted from Phase 1: Experimental in Prerelease, to Phase 2:
 
 * Fixes a crash that could occur when the Garbage Collector calls `Finalize` on a thread other than the main thread.
 
-<!-- end of Prerelease SDK 135 (Mar. 10, 2025) -->
+<!-- end of Prerelease SDK 1.0.3171-prerelease, for Runtime 135 (Mar. 10, 2025) -->
 
 
 <!-- ====================================================================== -->

microsoft-edge/webview2/release-notes/includes/templates.md

@@ -124,6 +124,7 @@ description
 
 No APIs have been promoted from Phase 1: Experimental in Prerelease, to Phase 2: Stable in Prerelease, in this Prerelease SDK.
 The following APIs have been promoted from Phase 1: Experimental in Prerelease, to Phase 2: Stable in Prerelease, and are included in this Prerelease SDK.
+The following APIs skipped Phase 1: Experimental in Prerelease, and have been directly added to Phase 2: Stable in Prerelease, and are included in this Prerelease SDK.  
 
 
 <!-- ---------- -->