Firefox release notes 138 (mdn#39327)

* firefox rel notes 138

* Update files/en-us/mozilla/firefox/releases/138/index.md

---------

Co-authored-by: Brian Smith <[email protected]>

Author: Rumyra

files/en-us/mozilla/firefox/releases/138/index.md

@@ -6,34 +6,24 @@ sidebar: firefoxsidebar
 ---
 
 This article provides information about the changes in Firefox 138 that affect developers.
-Firefox 138 is the current [Beta version of Firefox](https://www.mozilla.org/en-US/firefox/channel/desktop/#beta) and ships on [April 29, 2025](https://whattrainisitnow.com/release/?version=138).
+Firefox 138 was released on [April 29, 2025](https://whattrainisitnow.com/release/?version=138).
 
 ## Changes for web developers
 
-### Developer Tools
-
 ### HTML
 
 - The [`importmap`](/en-US/docs/Web/HTML/Reference/Elements/script/type/importmap) value of the [`type`](/en-US/docs/Web/HTML/Reference/Elements/script/type) attribute of the [`<script>`](/en-US/docs/Web/HTML/Reference/Elements/script) element now supports the [`integrity`](/en-US/docs/Web/HTML/Reference/Elements/script/type/importmap#integrity) key. This allows the ES module URLs referenced in the import maps to be matched against their integrity metadata. As a result, these modules are now compatible with [CSP](/en-US/docs/Web/HTTP/Guides/CSP) directives that require Subresource Integrity ([SRI](/en-US/docs/Web/Security/Practical_implementation_guides/SRI)). ([Firefox bug 1945540](https://bugzil.la/1945540)).
 
-#### Removals
-
 ### CSS
 
-#### Removals
+No notable changes
 
 ### JavaScript
 
 - The {{jsxref("Error.captureStackTrace()")}} static method is now supported. This installs stack trace information on a provided object as the {{jsxref("Error.stack")}} property. Its main use case is to install a stack trace on a custom error object that does not derive from the {{jsxref("Error")}} interface. ([Firefox bug 1950508](https://bugzil.la/1950508)).
 - The {{jsxref("Error.isError()")}} static method can now be used to check whether or not an object is an instance of an {{jsxref("Error")}} or a {{domxref("DOMException")}}. This is more reliable than using `instanceof` for the same purpose. ([Firefox bug 1952249](https://bugzil.la/1952249)).
 - The [`import`](/en-US/docs/Web/JavaScript/Reference/Statements/import) declaration now supports importing JSON modules using the [`with`](/en-US/docs/Web/JavaScript/Reference/Statements/import/with) attribute.
 
-#### Removals
-
-### SVG
-
-#### Removals
-
 ### HTTP
 
 - The [`Clear-Site-Data`](/en-US/docs/Web/HTTP/Reference/Headers/Clear-Site-Data) header can be used with the [`cache`](/en-US/docs/Web/HTTP/Reference/Headers/Clear-Site-Data#cache) (and `*`) directive to clear the browser network cache. This gives websites more control over data stored for their users, allowing them to, for example, mitigate the risk of privacy leaks by clearing the cache during logout. ([Firefox bug 1942272](https://bugzil.la/1930500)).
@@ -43,12 +33,6 @@ Firefox 138 is the current [Beta version of Firefox](https://www.mozilla.org/en-
   Developers can test whether the browser has put the document in an origin-keyed agent cluster using the {{domxref("window.originAgentCluster")}} property.
   ([Firefox bug 1665474](https://bugzil.la/1665474))
 
-#### Removals
-
-### Security
-
-#### Removals
-
 ### APIs
 
 - The [Login Status API](/en-US/docs/Web/API/FedCM_API/IDP_integration#update_login_status_using_the_login_status_api) is now supported when using the [Federated Credential Management (FedCM) API](/en-US/docs/Web/API/FedCM_API). It can be used to set and check whether a browser user is logged in to an identity provider.
@@ -69,12 +53,6 @@ Firefox 138 is the current [Beta version of Firefox](https://www.mozilla.org/en-
   It can also be read from the object returned by the [`getParameters()`](/en-US/docs/Web/API/RTCRtpSender/getParameters#degradationpreference) method.
   ([Firefox bug 1329847](https://bugzil.la/1329847)).
 
-#### Removals
-
-### WebAssembly
-
-#### Removals
-
 ### WebDriver conformance (WebDriver BiDi, Marionette)
 
 #### General
@@ -106,10 +84,6 @@ Firefox 138 is the current [Beta version of Firefox](https://www.mozilla.org/en-
   - `groupId` to {{WebExtAPIRef("tabs.query")}}. ([Firefox bug 1959715](https://bugzil.la/1959715))
   - `groupId` to {{WebExtAPIRef("tabs.onUpdated")}}. ([Firefox bug 1959716](https://bugzil.la/1959716)
 
-### Removals
-
-### Other
-
 ## Experimental web features
 
 These features are newly shipped in Firefox 138 and are considered experimental.