Is there something new? I have a feeling that half of current Android Version would be possible to be released as a patch, instead increasing its version to 13. The same with 10 to 11. IDK.
It seems that Google is preparing to release Android 13 well ahead of its Pixel 7 and Pixel 7 Pro launch event. Supposedly arriving as soon as next month, Android 13 will reach AOSP first before making its way to Pixel smartphones.