If you are interested in testing the new Android 12L beta version, it has just been released for all supported Pixel phones. You can now install new builds of Android 12L Beta 2 for the Pixel 3a and Pixel 4a as well as the Pixel 5a and Pixel 5a. The Pixel 6 line is still in development.
Google has not provided a list with changes so this is somewhat of a mystery. Flashing this to your smartphone Android 12L won’t make much difference since it is only for tablets. However, we’ll give it a try and report back if anything happens to be interesting.
Android 12L Beta 2
Release date: January 12, 2022
Emulator support: x86 64-bit, ARM (v8 A)
Security patch level January 2022
You will need to manually flash the Android Beta Program for 12L. This article explains how to flash a factory picture. contains instructions on flashing an OTA.zip image.