This just in from Twitter: the highly anticipated Batman: Arkham Knight, after having been delayed earlier this year, will launch on June 2, 2015. You can preorder on their official website.
Also announced are not one, but two collector's editions, Batman: Arkham Knight Limited Edition and Batman: Arkham Knight Batmobile Edition. Both collector's editions will be available in limited quantities at launch in North America, Europe, Australia and New Zealand for the PlayStation®4 and Xbox One. Batman: Arkham Knight Limited Edition will also be available in Europe, Australia and New Zealand for PC. See the details for each edition below.