Sigourney Weaver has revealed that she is scheduled to work with the director on Avatar 2, 3 and 4 at the same time.
The veteran Alien actress has said that she does not know how long the shooting will take.
"I just show up," she told Showbiz 411.
The promise of simultaneous filming has led to some speculation that the follow-ups to the blockbuster film may be released in consecutive years.
Shooting on the film will follow the first season of Weaver's new television show Political Animals and a short run of a new Christopher Durang play at the Lincoln Centre in New York City.
Cameron has said that he is "not interested" in any projects other than Avatar.
Watch the trailer for the special edition of the first Avatar movie below: