Moviemaker James Cameron has revealed that he's now planning three sequels to sci-fi blockbuster Avatar.

The director, who previously had only two sequels planned, revealed that he's hired screenwriters Josh Friedman (War Of The Worlds) to assist him with the first sequel's screenplay, Rick Jaffa and Amanda Silver (Rise of the Planet of the Apes) to help write the second and Shane Salerno (Alien vs. Predator 2) to co-pen the third.

Cameron also revealed that he plans on shooting all three sequels simultaneously starting next year, according to

"Building upon the world we created with Avatar has been a rare and incredibly rewarding experience," the director said in a statement.

"In writing the new films, I've come to realize that Avatar's world, story and characters have become even richer than I anticipated, and it became apparent that two films would not be enough to capture everything I wanted to put on screen," he added. "And to help me continue to expand this universe, I'm pleased to bring aboard Amanda, Rick, Shane and Josh — all writers I've long admired –­ to join me in completing the films screenplays."

There's no word if the three films will have specific titles or not, but for now "Avatar 2" is set for a December 2016 release, "Avatar 3" will hit screens a year later, and "Avatar 4" will bow at some point in 2018.