https://open.mp/progress
2 months last update here.
Honestly, many have lost hopes about this.
SA-MP has no active developer (Kalcor), it's done.
UGMP is another shit which has worse performance than GTA Online for computers and tons of bugs/crashes and bad client,
And open-mp is just terribly slow progress.
I mean, at december video in youtube, it was told " beta server coming soon ", so is soon, 2022?
I don't see anything neither beta server nor anything released this year.
Gotta say, this project had a lot of hype, but having so many members in the team and not being able to finish it, Already few years passed.
Honestly, R.I.P All the multiplayers for GTA:SA. 85% of english speaking people already left this game long ago. Now there are only bots and hackers.