According to Dave Burke, Vice President of Engineering for Android, the Android 12 Beta is the most downloaded/installed beta ever. However, no precise figures that might have been compared to earlier betas were made available.
The company had previously stated that Android 12 would have an entirely redesigned user interface with new features and notable security patches. The Beta version was available for Google Pixel phones as well as devices from OnePlus, Asus, Lenovo, Oppo, Realme, Sharp, Tecno, TCL, and other manufacturers.
Furthermore, Android 12 now includes new animations, widgets, and visuals that change based on the time and day. You can still download the Beta version if your phone satisfies the necessary specifications.