According to a post made on the official WB Games forums, Batman: Return to Arkham has been delayed. There’s no new release date at this time, but the post cites the need to give developer Virtuos Games, more time to help polish the title.
“After reviewing the progress of the project, the team at WB Games has decided to delay the release of Batman: Return to Arkham to give the team at Virtuos Games additional time to deliver a polished Batman Arkham game experience. We do not have a release date yet and will be sure to communicate that once we are sure the game will be ready. We know this is disappointing news, but we feel the extra time will allow the team to create the best gaming experience for our fans.”