Even though "Avatar" failed to secure the top honors at the 82nd annual Academy Awards, director James Cameron's 3-D science-fiction film seems all but guaranteed to have a sequel given the movie's unprecedented commercial success. But according to Cameron himself, a sequel is not quite a certainty.

"We'll see," the filmmaker told MTV News on the red carpet of the Oscars when asked about an "Avatar" sequel. "There are no foregone conclusions. There are some things that need to be worked out with 20th Century Fox. If we get all of that squared away, then it's all good."

This isn't the first time Cameron has expressed some uneasiness about working on "Avatar 2." In February, the celebrated filmmaker reiterated his position that a sequel isn't guaranteed just yet.

"I've got some deal hurdles I got to get over with the studio before I want to emotionally embrace that," Cameron told MTV News at the time. "[Sequel details have] never properly been worked out, let me put it that way, but everyone's highly motivated. Rupert Murdoch told us we were doing it, so now they have to make a deal."

Assuming that all the potential hurdles are cleared, Cameron has previously stated that an "Avatar" sequel could explore Pandora's neighboring moons. Additionally, there's a strong likelihood that the humans defeated at the end of "Avatar" could return in a sequel. But for now, Cameron can only guarantee one future activity: sleep.

"I'm going to sleep all day tomorrow," the filmmaker said before the Oscars began. "I intend to party all night and sleep all day."

Relive all the best moments from the 2010 Academy Awards with photos, interviews, blogs, post-show analysis and more, right here at MTV News.