Rumors have been swirling—based on a list of achievements—that Batman: Arkham City will be getting a new story-based add-on that centered on Bat-villain Harley Quinn and The Dark Knight's junior partner Robin. Well, a teaser image released today by the game's official Twitter account seems to point to a future appearance by the Joker's girlfriend.
The shoes in the image look like a match for the footwear Harley wore in her updated Arkham City costume and the character's been known to wield a giant hammer in her various comics and TV appearances, too. Hopefully, an actual announcement—as opposed to more teaser images—comes soon from Warner Brothers Interactive.