Warner Brothers announced today that a new Batman Arkham game is in the works. CFO John Martin said the company’s “strong” games release for the year includes a new entry in the series. However, that game will not be developed by Rocksteady, they are doing a prequel that details the Dark Knights first encounter with the joker. That game is not due until 2014 at the earliest. Details are not yet available on who is working on the new game.