At the New York Comic Con, Cameron and Dark Horse Comics announced a comic book series based on the "Avatar" movies.
Since the director could not attend the event, he recorded a special video message to make the announcement.
"I'm excited that starting now, even before the release of the first sequel, Dark Horse Comics will be bringing you new adventures from Pandora, covering the time before, during, and after the events of the original 'Avatar' film," Cameron said of the new comic book series.
Cameron is currently working on three follow-up movies to "Avatar" with Sam Worthington, Zoe Saldana, Stephen Lang and Sigourney Weaver expected to return.
Cameron is writing the scripts of the sequels alongside Rick Jaffa, Amanda Silver, Josh Friedman and Shane Salerno.
"Avatar 2" is expected to arrive in 2017.