https://wccftech.com/android-13-beta-3-released-by-google-download/

Google has decided to release the Android 13 Beta 3 for all supported Google Pixel devices. This news is being because the Platform Stability milestone for application now brings finalized system behaviors as well as APIs.

With the API Level 33 and NDP APIs now in their final stage, Google has recommended that developers "start final compatibility testing for apps, SDKs, and libraries." Additionally, Play Store alpha and beta tracks should also be published now that the Android 13 Beta 3 is out.