“I have a massive game you may have heard of called Arkham Knight,” Conroy said in an address at Denver Comic-Con last week. “It was suppose to come out in January, we've been working on it for a year and a half, it's still not done. So it's going to come out next January, but I know everyone is frustrated.”
This statement suggest a lot of behind-the-scenes delays as well as the public delay from October 2014 to sometime in 2015. Developer Rocksteady hasn't revealed an official released date yet however Kevin Conroy's loose lips have proved accurate in the past.
Stay tuned for more details and check out this footage showing off the tank abilities of the new Batmobile.