Batman: Return to Arkham Release Leaked?

Batman: Return to Arkham was just delayed indefinitely, with no release date in sight, may have just a new release date. On the product page of Return to Arkham on Amazon, the release date was changed from July 26, 2016 to December 29, 2016, this could just be the new release date, but Amazon is adding to its pre orders of games, such as Spiderman PS4 and Injustice 2 all have a release date in December 2017, this is probably not true, but we know that they both come out in 2017, now we are not sure if Return to Arkham is coming in 2016, but now I think we can confirm it.