http://www.eurogamer.net/articles/2013-09-10-vin-diesel-announces-new-chronicles-of-riddick-game
I'm being reservedly excited here. I loved the other two games but the fact that "MMO" was mentioned here kind of worries me. I'm going to wait until we get more info before making any judgements though. The team that did the first game is the one working on it though, which is pretty cool. And Tigon is also working on something new.