A NeoGAF member has posted some information obtained from this year's WonderCon regarding the upcoming release of Batman: Arkham Knight:
The news comes to use straight from WonderCon, after the DC All Access Panel showed the trailer for the game. They revealed to the audience that the game has now been pushed to a 2015 release date.
The audience was also shown a trailer for the next Arkham game, featuring the voiceover by Thomas Wayne of his “last will and testament” . He asks that Bruce “honors the Wayne family legacy” and urges him to “commit yourself to the improvement of gotham city”. There were some humorous moments, like when Thomas advises Bruce“do not be frivolous”, and don’t waste money on “fast cars”, and a destructive lifestyle while images of the Batmobile and car chases were being shown. The trailer featured a prominent role for Two-Face and plenty of car chase scenes, ending in a fiery exploding bat symbol. This is no longer a 2014 project, they reminded the audience, but a 2015 project.
The game's official site hasn't been updated yet, so treat this info as a rumor for now.
[-UPDATE- 03/06/14-]
The game has now officially been delayed until 2015
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