They promised you extra content through the end of 2015 and that's exactly what you're getting.
Batman: Arkham Knight publisher Warner Bros. Interactive Entertainment has detailed three more content expansions, all of which will release in October.
First up is the Batman Classic TV Series Mobile pack, which gives players classic skins for Catwoman, Robin and the Batmobile, along with two new racetracks inspired by the original television series. Then there's the Crime Fighter Challenge Pack that will offer "various combat and predator maps featuring Batman, Nightwing, Robin and Azrael."
Last but definitely not least is Catwoman's revenge, an expansion that is set after the story events of Arkham Knight . Here, players will embark on a new story as Catwoman "seeks her revenge on Riddler." If you're a little behind on the news, you should know that the second Crime Fighter Challenge Pack and GCPD Lockdown come out next week (September 29), and The Tumbler Pack, which features the Batmobile from Christopher Nolan's "Dark Knight" movie series is currently available to purchase.
All of this is available if you picked up the $40 Season Pass for Batman: Arkham Knight . If you didn't, you can opt to purchase some of it separately.
Related Game(s): Batman: Arkham Knight