They are at 0.1 T1(testing build).
SA-MP was the first Grand Theft Auto online version (if im not wrong), so its so poor, and i dont see how 16.000 players will notice about new downloads... and it has maaaany players.
Why? Simple, when a noob types "GTA SA Online" or "GTA SA Multiplayer", Google's results are not more than SA-MP (the name of game says all), so the user doesnt care about other things, so he just download and play. (i can say 80% of SAMP users didnt visited SAMP forum).
You are wrong, mta was the first multiplayer mod...