A few GameStop stores have been reporting that they have been receiving some marketing material that features the Batman Arkham logo surrounded by flames. We have confirmed this, including the local GameStop near to me, have shown us the banner. WB and Rocksteady have not confirmed or denied the existence of a new Batman game, or if this could be an expansion.
Rocksteady was the studio behind Arkham Asylum, and Arkham City, and Batman: Arkham Origins was developed by WB Montreal. A story has been published that a Dutch Journalist recently attended an even hosted by Rocksteady Studios, and that all information disclosed could not be published or shown until March.