diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 21aa2b64cb..bac01582d2 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -48,6 +48,9 @@
         visibility in order to allow Kotlin subclasses of
         `AdaptiveTrackSelection.Factory`
         ([#8830](https://github.com/google/ExoPlayer/issues/8830)).
+    *   Added a combined and structured metadata object (`MediaMetadata`) to
+        Player, accessible through `getMediaMetadata` or by listening to
+        `EventListener.onMediaMetadataChanged`.
 *   UI:
     *   Add builder for `PlayerNotificationManager`.
     *   Add group setting to `PlayerNotificationManager`.
@@ -64,8 +67,8 @@
     *   Allow fall back from DTS-HD to DTS when playing via passthrough.
 *   Video:
     *   Add `Player.getVideoSize()` to retrieve the current size of the video
-        stream. Add `Listener.onVideoSizeChanged(VideoSize)` and
-        deprecate `Listener.onVideoSizeChanged(int weight, int height...)`.
+        stream. Add `Listener.onVideoSizeChanged(VideoSize)` and deprecate
+        `Listener.onVideoSizeChanged(int weight, int height...)`.
 *   Analytics:
     *   Add `onAudioCodecError` and `onVideoCodecError` to `AnalyticsListener`.
 *   Downloads and caching:
@@ -105,6 +108,28 @@
         `programInformation` and `serviceDescription` set to `null` instead.
     *   Remove `CryptoInfo.getFrameworkCryptoInfoV16`. Use
         `CryptoInfo.getFrameworkCryptoInfo` instead.
+    *   Remove `CastPlayer` specific playlist manipulation methods. Use
+        `setMediaItems`, `addMediaItems`, `removeMediaItem` and `moveMediaItem`
+        instead.
+    *   Remove `PlaybackPreparer`. UI components that previously had
+        `setPlaybackPreparer` methods will now call `Player.prepare` by default.
+        If this behavior is sufficient, use of `PlaybackPreparer` can be removed
+        from application code without replacement. For custom preparation logic,
+        replace calls to `setPlaybackPreparer` with calls to
+        `setControlDispatcher` on the same components, passing a
+        `ControlDispatcher` that implements custom preparation logic in
+        `dispatchPrepare`. Extend `DefaultControlDispatcher` to avoid having to
+        implement the other `ControlDispatcher` methods.
+    *   Remove `setRewindIncrementMs` and `setFastForwardIncrementMs` from UI
+        components. Use `setControlDispatcher` on the same components, passing a
+        `DefaultControlDispatcher` built using `DefaultControlDispatcher(long,
+        long)`.
+    *   Remove `PlayerNotificationManager` constructors and `createWith`
+        methods. Use `PlayerNotificationManager.Builder` instead.
+    *   Remove `PlayerNotificationManager` `setUseNavigationActions` and
+        `setUseNavigationActionsInCompactView`. Use `setUseNextAction`,
+        `setUsePreviousAction`, `setUseNextActionInCompactView` and
+        `setUsePreviousActionInCompactView` instead.
 *   DRM:
     *   Only dispatch DRM session acquire and release events once per period
         when playing content that uses the same encryption keys for both audio &