I've been reading up on "Dead Island" which is coming to all platforms this fall. The game looks like "Left 4 Dead" meets "GTA" - in other words, it's what "Dead Rising" should have been.
I really hope the game ships with Steamworks. I would love to go after some 'chevios in that game.
I know it's a little late but I finally got the game. The reviews at the time didn't sound so great so waited. Glad I did; I got it for $10! I going to give it a try later today.