GameStop have leaked the Batman Arkham HD Collection via an email sent to employees detailing the upcoming release. As you can see in the below picture, Batman Arkham HD Collection will contain both Batman: Arkham Asylum and Batman: Arkham City along with all DLC for both titles. The leak also claims that the game will have updated & optimised visuals for PS4.
Interestingly enough, the collection won’t include Batman: Arkham Origins.
It is scheduled for release on PS4 and Xbox One and the 10th of June with pre-orders opening up sometime tomorrow. We’d expect an official announcement later today.