https://techcrunch.com/2021/02/18/google-launches-the-first-developer-preview-of-android-12/

Almost exactly a year after Google announced the first developer preview of Android 11, the company today released the first developer preview of Android 12. Google delayed the roll-out of Android 11 a bit as the teams and the company’s partners adjusted to working during a pandemic, but it looks like that didn’t stop it from keeping Android 12 on schedule. As you would expect from an early developer preview, most of the changes here are under the hood and there’s no over-the-air update yet for intrepid non-developers who want to give it a spin.