Merge pull request #3398 from MicrosoftDocs/web-platform-release-notes

Edge 135 web platform release notes

Author: captainbrosset

microsoft-edge/toc.yml

@@ -30,6 +30,10 @@
           href: ./web-platform/release-notes/index.md
           displayName: what's new, announcements
 
+        - name: Microsoft Edge 135
+          href: ./web-platform/release-notes/135.md
+          displayName: Microsoft Edge 135 web platform release notes (Apr. 2025)  # page title
+
         - name: Microsoft Edge 134
           href: ./web-platform/release-notes/134.md
           displayName: Microsoft Edge 134 web platform release notes (Mar. 2025)  # page title

microsoft-edge/web-platform/release-notes/133.md

@@ -58,13 +58,13 @@ To stay up-to-date and get the latest web platform features, download an Insider
 <!-- ====================================================================== -->
 ## Edge DevTools
 
-For Edge DevTools, see [What's New in DevTools (Microsoft Edge 133)](../../devtools-guide-chromium/whats-new/2025/02/devtools-133.md).
+See [What's New in DevTools (Microsoft Edge 133)](../../devtools-guide-chromium/whats-new/2025/02/devtools-133.md).
 
 
 <!-- ====================================================================== -->
 ## WebView2
 
-For WebView2, see [Release Notes for the WebView2 SDK](../../webview2/release-notes/index.md).
+See [1.0.3065.39](../../webview2/release-notes/index.md#10306539) in _Release Notes for the WebView2 SDK_ (Feb. 2025).
 
 
 <!-- ====================================================================== -->
@@ -341,7 +341,7 @@ Allows Microsoft Store-installed Progressive Web Apps (PWAs) to access file cont
 
 Expires on June 14, 2025.
 
-Granular per-document and per-element control over which content should allow or disallow handwriting input.
+The `handwriting` attribute provides a per-document and per-element way to control where handwriting input, such as when using a stylus, is allowed.
 
 * [Explainer](https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Handwriting/explainer.md)
 * [Feedback](https://github.com/MicrosoftEdge/MSEdgeExplainers/issues/new?labels=Handwriting,OriginTrialFeedback&amp;title=%5BHandwriting%5D+Feedback)

microsoft-edge/web-platform/release-notes/134.md

@@ -40,18 +40,20 @@ To stay up-to-date and get the latest web platform features, download an Insider
     * [Web App `LocalFolder` Access](#web-app-localfolder-access)
     * [HTML+IDL handwriting attribute](#htmlidl-handwriting-attribute)
     * [Acquisition Info API](#acquisition-info-api)
+  * [New Chromium origin trials](#new-chromium-origin-trials)
+    * [SelectParserRelaxation](#selectparserrelaxation)
 
 
 <!-- ====================================================================== -->
 ## Edge DevTools
 
-For Edge DevTools, see [What's New in Microsoft Edge DevTools](../../devtools-guide-chromium/whats-new/whats-new.md).
+See [What's New in DevTools (Microsoft Edge 134)](../../devtools-guide-chromium/whats-new/2025/03/devtools-134.md).
 
 
 <!-- ====================================================================== -->
 ## WebView2
 
-For WebView2, see [Release Notes for the WebView2 SDK](../../webview2/release-notes/index.md).
+See [1.0.3124.44](../../webview2/release-notes/index.md#10312444) in _Release Notes for the WebView2 SDK_ (March 2025).
 
 
 <!-- ====================================================================== -->
@@ -91,7 +93,7 @@ Using this property, webpages that display HDR images can limit their brightness
 <!-- ---------- -->
 ###### Customizable `<select>` element
 
-The customizable `<select>` element allows developers to take complete control of the rendering of the element, by adding the `appearance: base-select` CSS declaration.
+The customizable `<select>` element allows you to take complete control of the rendering of the element, by adding the `appearance: base-select` CSS declaration.
 
 This feature currently relies on the `SelectParserRelaxation` flag, which changes the HTML parser to allow more tags within the `<select>` tag.  Sites which include additional tags inside `<select>` which were getting removed before, such as `<span>` elements, or are including an extremely large number of `<option>` elements may be affected by `SelectParserRelaxation`.
 
@@ -113,7 +115,7 @@ A new `closedby` attribute controls the behavior:
 <!-- ---------- -->
 ###### `application-title` meta tag for installed web apps
 
-The `<meta name="application-title">` element allows developers of installed web applications to set the text that appears in the title bar of the installed application window.  By default, if the `application-title` meta name is missing, the text that's contained in the HTML `<title>` element is used instead.
+The `<meta name="application-title">` element allows an installed web application to set the text that appears in the title bar of the installed application window.  By default, if the `application-title` meta name is missing, the text that's contained in the HTML `<title>` element is used instead.
 
 See [Other names](https://developer.mozilla.org/docs/Web/HTML/Element/meta/name#other_names), in _Standard metadata names_, at MDN.
 
@@ -134,7 +136,7 @@ The `expect-no-linked-resources` Document-Policy hints to the browser that the b
 <!-- ---------- -->
 ###### Explicit resource management
 
-This feature introduces the `using` keyword to JavaScript, which allows developers to explicitly manage resources.  The `using` keyword is used to define a block of code that uses a resource, and ensures that the resource is disposed of when the block is exited.  This feature addresses a common pattern in software development regarding the lifetime and management of various resources (such as memory or I/O).  This pattern supports resource allocation and explicitly releasing critical resources.
+This feature introduces the `using` keyword to JavaScript, which allows you to explicitly manage resources.  The `using` keyword is used to define a block of code that uses a resource, and ensures that the resource is disposed of when the block is exited.  This feature addresses a common pattern in software development regarding the lifetime and management of various resources (such as memory or I/O).  This pattern supports resource allocation and explicitly releasing critical resources.
 
 See [ECMAScript Explicit Resource Management](https://github.com/tc39/proposal-explicit-resource-management).
 
@@ -251,7 +253,7 @@ Allows Microsoft Store-installed Progressive Web Apps (PWAs) to access file cont
 
 Expires on June 14, 2025.
 
-Granular per-document and per-element control over which content should allow or disallow handwriting input.
+The `handwriting` attribute provides a per-document and per-element way to control where handwriting input, such as when using a stylus, is allowed.
 
 * [Explainer](https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Handwriting/explainer.md)
 * [Feedback](https://github.com/MicrosoftEdge/MSEdgeExplainers/issues/new?labels=Handwriting,OriginTrialFeedback&amp;title=%5BHandwriting%5D+Feedback)
@@ -270,6 +272,22 @@ Supports 3P acquisition attribution for Progressive Web Apps (PWAs) that were ac
 * [Register](https://developer.microsoft.com/microsoft-edge/origin-trials/trials/4013a45f-3f48-4341-81ea-1bc13bf90c83)
 
 
+<!-- ------------------------------ -->
+#### New Chromium origin trials
+
+
+<!-- ---------- -->
+###### SelectParserRelaxation
+
+Expires on November 11, 2025.
+
+This is a deprecation origin trial, which re-enables the old parser behavior for parsing `<select>` tags.  Under that old behavior, non-supported content is silently discarded and not included in the DOM content underneath the `<select>`.  This trial can be used in case the new behavior that's described in [Customizable `<select>` element](#customizable-select-element) (above) breaks a site.
+
+* [Explainer](https://chromestatus.com/feature/5145948356083712)
+* [Feedback](https://crbug.com/new)
+* [Register](https://developer.chrome.com/origintrials/#/register_trial/182958734861926401)
+
+
 <!-- ====================================================================== -->
 > [!NOTE]
 > Portions of this page are modifications based on work created and shared by Chromium.org and used according to terms described in the [Creative Commons Attribution 4.0 International License](https://creativecommons.org/licenses/by/4.0).