Warner Bros. Interactive Entertainment announces Batman: Arkham City, a sequel to Batman: Arkham Asylum that's expected in fall 2011 for Windows, Xbox 360, and PlayStation 3. The preliminary Batman: Arkham City Website is online at one of the 15 recently registered domains related to this franchise, offering a contest promoting the game and a teaser trailer revealing the sequel will feature the same antagonists as the original. The trailer also concludes with a link to Arkhamhasmoved.com which has the same content, and a non-working link to preorder the game. Here's word on the game: "Developed by Rocksteady Studios, Batman: Arkham City builds upon the intense, atmospheric foundation of Batman: Arkham Asylum, sending players soaring into Arkham City, the new maximum security “home” for all of Gotham City’s thugs, gangsters and insane criminal masterminds. Set inside the heavily fortified walls of a sprawling district in the heart of Gotham City, this highly anticipated sequel introduces a brand-new story that draws together a new all-star cast of classic characters and murderous villains from the Batman universe, as well as a vast range of new and enhanced gameplay features to deliver the ultimate experience as the Dark Knight."