The new beta worth it? Debating if I want to do the same to my unlocked note 20 ultra thats currently on tmobile firmware for the esim.So I flashed my t-mobile 986u to u1 and then updated to this beta. I had e sim setup and as stated before u1 does not support e sim. After a short phone call with t-mobile there able to disable e sim and re-enable my physical Sim. Now everything is working perfectly as it should!
Suttle changes, but I haven't noticed anything missing. Search on YouTube "note 20 Android 12 beta". There's a video showing some of the new features. Just be sure to change back to physical sim or you can't make calls or send texts since ther is no esim option.
See differences here
And since Android 12 has gone live for some of the carriers, I'd suspect there wont be a beta 4. My bet is it'll move to stable and get released very soon