The release date for Batman: Return to Arkham is October 21. Return to Arkham is a bundle that contains Arkham Asylum and Arkham City, as well as all DLC released for both of them.
Both games in the bundle were very well received; Arkham Asylum and Arkham City have a 91 and 96 on Metacritic respectively. The games will have remastered visuals. The video below compares the original games and the remastered versions.
Batman: Return to Arkham will be available for PlayStation 4 and Xbox One on October 21, 2016.