Developed by Rocksteady, Batman: Arkham City takes the action off Arkham Island and brings it to a brand new maximum security prison, Arkham City, sort of a Club Med for Gotham's insane super criminal elite and their various thugs, toadies and henchmen. Considering Batman's rogue's gallery could fill a small city, expect to see a number of villains from the Batman Universe.
Batman: Arkham City is currently in development for PC, Xbox 360 and PS3 and slated for release in Fall 2011.