Elon's statement suggests forced "authentication" for all users, so that'll presumably be the end of anonymous Twitter profiles and the start of needing to prove identity at sign-up time:
https://twitter.com/elonmusk/status/1518677066325053441
I would expect that feature roughly the same time I expect full self driving in Teslas, or the Cybertruck, or a mission to Mars. Musk makes lots of promises.