Arkhamverse.com has discovered the first DLC for the previously announced Sony exclusive DLC. It seems that Sony has updated the game's page on their site with this addition:
Terror Unleashed-Gotham falls victim to Scarecrow's fear toxin, transforming the famous city into a twisted, hellish nightmare in the Batman: Arkham Knight Scarecrow Nightmare Pack. Tear through the city in the all-new batmobile and face off against a towering vision of Scarecrow and his undead army as they spread terror on the streets, available exclusively on Playstation 4.
Batman: Arkham Knight is set to release in 2015.
Posted by Dustin Fritschel