According to a couple of reports, Batman: Arkham Knight, the third and final game in Rocksteady's Arkham trilogy (I guess they don't count Batman: Arkham Origins), has been pushed back to 2015, just weeks after the game was revealed.
Gameranx are reporting that the news out of WonderCon is that the game has been pushed back to 2015, and that report was backed up by claims on BleedingCool that also suggests that Arkham Knight is now a 2015 project.
There's still no official source or confirmation, and given the game was only announced at the beginning of March, it's probably best to take these rumours with a pinch of salt. For more details on what's coming in the game, head this way for our preview.