Fusible has uncovered what is believed to be a list of domain names Warner Bros has registered with internet brand protection company MarkMonitor for the follow-up.
The domain names include Batman Arkham Universe, Batman Arkham Arises and Batman Arkham Origins.
While Warner Bros has not been officially confirmed as the buyer, MarkMonitor is known to work with the studio, having been used to secure the domain for the upcoming 300 movie prequel.
As noted in the report, Warner may have secured the websites for a future entry in the Batman movies franchise, or simply to protect its intellectual property.
It was previously reported that the next entry in the Arkham series could be a prequel set in DC's Silver Age, depicting Batman's first meeting with the Joker and introducing Justice League heroes such as Superman and Wonder Woman.
> Read Digital Spy's review of Batman: Arkham City
List of registered domain names in full:
arkhamuniverse.com (Arkham Universe)
batmanarkhamuniverse.com (Batman Arkham Universe)
batmanarkhamarises.com (Batman Arkham Arises)
batmanarkhambegins.com (Batman Arkham Begins)
batmanarkhamdarkknight.com (Batman Arkham Dark Knight)
batmanarkhamknight.com (Batman Arkham Knight)
batmanarkhamlegend.com (Batman Arkham Legend)
batmanarkhamlegends.com (Batman Arkham Legends)
batmanarkhamnight.com (Batman Arkham Night)
batmanarkhamorigins.com (Batman Arkham Origins)
batmanarkhamstories.com (Batman Arkham Stories)
darkknightarkham.com (Dark Knight Arkham)
dcarkhamuniverse.com (DC Arkham Universe)
dcarkhamverse.com (DC Arkhamverse)
thearkhamuniverse.com (The Arkham Universe)
Screenshot gallery - Batman: Arkham City:
Copyright: Warner Bros.