A month before release, WB Games announced that Batman: Return to Arkham would be delayed. No release date was revealed at the time, however, the developers cited needing more time to "create the best gaming experience" for fans.
Perhaps WB had learned from the mess that Batman: Arkham Knight was on PC. The game's launch was so awful they had to suspend sales of the game for a few months and when they re-released it, it was still broken.
A follow-up post from WB Games revealed that the developers still did not have a release date, but sources pointed that November would be the earliest we saw the game, but it could even release next year.
Now, a retailer has listed the game for a November release. Online retailer, Base, has listed Batman: Return to Arkham with a release date of November 25th, 2016. Whether or not this release date is accurate is unclear. Another online retailer that's popular for jumping the gun with announcements, Amazon, still has the game listed for December 29th, 2016 – an obvious placeholder date.
If an official announcement comes, we will let you know.