Avatar will have three sequels, next movie is due in December 2016
 

When Avatar hit theaters in 2009 it was notable not only for its incredible computer rendered special effects and record breaking box office returns, but also as a touchstone for a resurgence of 3D movies. Now 20th Century Fox and director James Cameron have announced plans to build out a quadrilogy of Avatar movies. Screenwriters Rick Jaffa, Amanda Silver, Shane Salerno and Josh Friedman are all on board to collaborate on the screenplays for movies 2, 3 and 4, which will be produced by Cameron and Jon Landau's Lightstorm Entertainment. Avatar 2 is scheduled to hit theaters in December 2016, with the other movies following in 2017 and 2018. WETA remains on hand to produce the special effects, we'll see what advancements in technology (Jim's in love with high framerates but The Hobbit didn't garner a universally positive response) allow them to create this time around and if audiences come out in similar numbers -- hopefully the 3D Blu-ray (or whatever format is around) doesn't take so long to arrive at retail this time.

http://www.engadget.com/2013/08/01/a... ign=Engadget