Speaking to MTV, Landau said that the book would flesh out lead character Jake Sully's backstory on Earth before he journeys to Pandora.
"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," he said.
Cameron earlier told DS that he had to cut down his script from 220 pages before he could start production on Avatar.
"The story was straightened out without as many secondary excursions. All that stuff... I mean really it was quite novelistic. It was like trying to adapt a novel," he explained. "And I found that out the hard way, because when I adapt one of my treatments, I just start writing and I start turning it into scene form. And then I see where I wind up. Well, I wound up at 220 pages. So it's kind of, 'What half of that can you live without?'."
> Click here to read our recent interview with James Cameron