Every SemiCon usually has a RiscV forum. Obviously there are also RiscV events. Wesemibay usually has several RiscV processors and GPU's from new vendors and you can then go and check what features they support. But basically as with everything else you have to show up and talk to people, or just look at the summaries afterwards.

I basically spend way to much time with RISC-V related things. But the easiest way to get more info about RISC-V developmemts is by watching the youtube uploads of the RISC-V summit talks.