https://techcrunch.com/2022/06/09/google-releases-android-13-beta-3-reaches-platform-stability/

Google has released Android 13 beta 3, and while there aren’t any major changes in this version, that’s probably the point of it as the version has reached platform stability.

This means that there won’t be any significant changes to Android 13’s APIs, and developers can tune their apps for the version when it rolls out to consumers.