"It would be something that would lead up to telling the story of the movie, but it would go into much more depth about all the stories that we didn't have time to deal with - like the schoolhouse and Sigourney [Weaver's character] teaching at the schoolhouse; Jake on Earth and his backstory and how he came here; [the death of] Tommy, Jake's brother; and Colonel Quaritch, how he ended up there and all that," Landau explained.

Although Cameron has extensive writing credentials, including the screenplays for everything from the first two "Terminator" films to "Titanic," the "Avatar" prequel would mark his debut as a novelist.

"I don't think Jim has ever written a novel before, but his first step of writing a script is often in a novella format," Landau said. "So this is just expanding that, and I think that he'll be very adept at it."