At this point, we really do not see the need to keep the HD Collection a secret anymore. On top of all the leaks we saw last week, there is now an Italian gaming magazine that is showing off the cover art of the new Batman: Return to Arkham HD Collection.
While the developers are still not willing to announce it yet, we are pretty confident that the HD Collection is on its way. We know that the Batman: Return to Arkham will consist of two Batman games, the Batman: Arkham Asylum and Batman: Arkham City. The HD Collection will also come with all the DLC that the game had as well as all the extra content.
All we need now is a date and we are all set. It was previous announce that the game will be release on the 10th of June on the Xbox One and Playstation 4.