Batman: Return to Arkham has been listed by the Italian arm of video game retailer GameStop. The listing states the title will feature the first two game's in Rocksteady's series, along with all DLC for both.Although neither developer Rocksteady nor publisher Warner Bros. Interactive Entertainment have officially announced a Batman: Arkham Collection, this is the third instance of it being listed by a retailer, giving further credibility to its existence.On April 18, a GameStop employee leaked images of an unannounced "Batman HD Collection." The collection was also mentioned prior to this, on March 23.