Today's #JetpackReleaseNotes include minor releases in Room 2.5.2, Compose Material3 1.1.1, and Annotation Experimental 1.3.1, but importantly is the first widespread set of releases that use a compileSdkVersion of 34 - you'll need to swap over as well!
https://developer.android.com/jetpack/androidx/versions/all-channel#june_21_2023
Recent Release Notes  |  Android Developers

Android Developers
With Android 14's API 34 being finalized, ~all new Jetpack library releases have started to compile with API 34. That means your app is also going to need to compile with API 34. Note that targetSdk is a whole different thing that you can do much later!
https://medium.com/androiddevelopers/picking-your-compilesdkversion-minsdkversion-targetsdkversion-a098a0341ebd
@ianlake Are you gonna publish the android-34 source as well?
@coreflodev - after the final public release of Android 14, the source code for it gets pushed to AOSP. That's also when you can download the source via the SDK Manager.