For quite some time there have been many rumors and leaks that Warner Brothers and Rocksteady Studios are making a Batman: Return to Arkham collection. This rumored collection features remastered versions of the first two games in the acclaimed Batman: Arkham series, including Batman: Arkham Asylum and Batman: Arkham City. These rumors have been floating around since March, and on April 18th a Gamestop employee leaked photos of this yet to be confirmed collection.
Though not confirmed, leaked images of GameStop and PEGI articles of it have to give this some credibility. With a supposed release on June 10th, a confirmation must be coming soon, if it is in fact authentic.
It should be noted that E3 is happening at the supposed time of release.
We will update when more information becomes available.