FYI some plans on stable update:

1. Make another notification reliability improvement (there's single case remaining where there's chance notification may be missing)
2. Fix more bugs and issues (both app-side and TDLib-side), especially ones introduced with the new core architecture & notifications. Maybe add little features here and there.
3. See if there are any theme color or property requests, and add the easiest ones. If you are theme creator and miss something, please ping anytime in the @tgx_perfection #request hashtag (if you also include screenshots with some explanation, it would be perfect)
4. Will give it 1-2 days to see if it's OK to go stable.
5. Promote to stable.

Then go to new features and designs.

TDLR: while I don't guarantee it for sure, stable version should become available for all users around this weekend.