October 18. PS4/XB1. PC notably absent because Warner Bros lost a lot of money on Arkham Knight refunds on Steam. Arkham Asylum and Arkham City with all DLC on one disc, plus a mild graphical upgrade, mainly by using the Arkham Knight version of the game engine with some retexturing (most noticeable in the Zsasz segment at 1:12 in the video below). [video=youtube;w2_q7QS15ZM]https://www.youtube.com/watch?v=w2_q7QS15ZM[/video]
They contracted the PC port to Iron Galaxy (I think, I'll fact check later) and maybe some other studios. They should have kept that crap in-house instead of just hosing PC people.