Google, today, released the first Android 13 Developer Preview codenamed Tiramisu. The new Android version that is slated to hit devices sometime after July 2022 will bring new privacy features such as a system-wide photo picker, themed app icons for third-party apps, faster hyphenation, and more. Android 13 DP1 currently is meant only for developers and can be used in the Android Emulator or flashed manually  on compatible Pixel devices including the Pixel 6 and Pixel 6 Pro.

https://www.notebookcheck.net/Android-13-Developer-Preview-1-Tiramisu-now-available-for-Pixel-4-to-Pixel-6-Pro-brings-system-wide-photo-picker-themed-app-icons-and-more.598723.0.html