Android 12

Android 12 is the newest Android mobile operating system version. Android 12 is the twelfth major release and 19th version of Android, the mobile operating system developed by the Open Handset Alliance led by Google.
Android 12 was released publicly on October 4, 2021, through Android Open Source Project (AOSP) and was released to supported Google Pixel devices on October 19, 2021.

There is a new system UI with Material You that’s expressive, dynamic, and personal. Performance improvements have been made to system services such as the WindowManager, PackageManager, system server, and interrupts. Android 12 adds support for spatial audio, and MPEG-H 3D Audio, and will support transcoding of HEVC video for backwards compatibility with apps which do not support it. OS-level machine learning functions are sandboxed within the “Android Private Compute Core”, which is expressly prohibited from accessing networks.

For more detailed technical details read:

Android 12: The Ars Technica Review
Our yearly deep dive into all the interesting stuff in Google’s latest OS.
https://arstechnica.com/gadgets/2021/11/android-12-the-ars-technica-review/