Merge pull request #20 from moodlemobile/matrix-mention

Add note about Matrix

general/app_releases/v4/v4.3.0.md

@@ -25,6 +25,10 @@ Release date: 10 November 2023
 
 Accessibility: iOS 17.1 and iOS 17.2 VoiceOver might not work on certain elements. This is a bug in Apple's WebKit component, out of our control, hopefully solved on iOS 17.3. For more information check the [bug report](https://bugs.webkit.org/show_bug.cgi?id=264410).
 
+### Experimental features support
+
+Included in Moodle LMS version 4.3 is support for Matrix as a course communication tool. It's important to note that while this feature is integrated into the LMS, it is not currently supported by the Moodle app. Experimental features may not receive immediate support in the app.
+
 ## Complete list of issues
 
 ### Task