With API Level 33, Android 13 Beta 4 is a “release candidate build for [developers’] final testing,” according to the Android developer community.
So that users who upgrade their devices around the final release have a good user experience
You should release compatible updates for all of your apps, SDKs, libraries, tools, and game engines once you’ve finished testing them
Additionally, you can continue to build out new features using the latest APIs and test your app to discover any issues that may arise.
Devices that had been connected and disconnected from the device in rapid succession on some devices have now been fixed.
Fix for a problem where the system incorrectly reported the Android version of the device when a user checked for system updates by navigating to Settings > System > System update
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