A sneak preview for
Batman: Assault on Arkham has been released with new details including that the game takes place two years prior to
Batman: Arkham Asylum and The Riddler having a (presumably large) role in the film, as well as concept art and storyboards being shown.
From DC Entertainment, Warner Bros. Animation and Warner Bros. Home Entertainment comes an all new animated movie set within the same universe and continuity as the bestselling Batman: Arkham Asylum videogames.
Batman: Assault on Arkham will be released on Blu-Ray, DVD and Digital HD in 2014.