During development on a new Android version, Google sets the platform SDK version to the codename until the SDK is finalized, which is why in Android 15 Beta 3 — Android 15’s first Platform ...

Extension SDK has gone public. With it, versions of Android 11 and 12 should be able to use new features that were exclusive to Android 13.

To reduce the gap, Google has released the first public version of the Extension SDK, which aims to bring features of the latest Android version to older iterations.

We’ve built a new Extension SDK framework for you to integrate with these APIs, and today, we’re releasing the first public version of the Extension SDK (Extension Level 4).