James Cameron has warned Avatar fans it may be another four years before they see the next part of the planned sci-fi trilogy - because he's still writing "tons of notes" to develop the sequel.
The Titanic director began drafting the alien-human love story in 1994 - 15 years before it hit the big screen last December and shattered worldwide box office records.
Fans are already clamouring to find out what's next for Sam Worthington's character, Jake Sully, and his Na'vi lover Neytiri, played by Zoe Saldana, but, according to the New York Post, he isn't planning to release the first Avatar sequel until 2014.
Cameron tells the publication, "Right now, the thinking is that (films) two and three are going to be done together. Theyíll be released separately, probably a year apart or maybe even two, but theyíll be done in a bunch.
"Iím mapping out the story line right now, so thereís a proper arc that plays out over two films, but (it) buttons nicely at the end of two, so you donít get this horrible second-act Matrix feeling - you know: 'Iíve just sat through a three-hour movie and f**k all happened at the end!'"
Avatar has so far earned $2.7 billion in box office revenue worldwide, a figure which is expected to skyrocket when the film is re-released for a limited-run on Friday, featuring nine minutes of never-before-seen footage.