Apparently the hacker has got his hold on the source codes of both GTA V and GTA VI and is going to sell them to the highest bidder. If that happens and all that source code leaks, then all hell is going to break loose – for the hacker trying to stay hidden and of course for Rockstar and Take Two. And of course we will not hear or see anything about GTA VI for a looooooong time.
I've been playing it for a while and although not currently active, my experience has been enjoyable.
The game is now in version 2+ if I remember correctly, so there've been further updates not in this trailer.