Avatar 3 Movie

Fans of James Cameron's Avatar were thrilled by the first film and are waiting with impatience for the second which will be greenlit soon. Well, what they may don't know yet, is that Avatar has been planned as a trilogy by Director James Cameron. So yes, there is an Avatar 3 movie ahead of us!
It's actually Sam Worthington, who got the lead role as Jack Sully the human turned Na'avi thanks to the Avatar technology, who, the first, revealed that the cast has signed on for a trilogy:

"We're signed for a trilogy. But I think I'll be 94 by the time it finishes, to be honest. I know Jim's got some ideas in his big head."

Actor Sam Worthington

James Cameron has since confirmed that he's been envisioning to do an Avatar trilogy from the start:

"We'll follow Jake and Neytiri. I have a trilogy-scaled arc of story right now, but I haven't really put any serious work into writing a script."

Director James Cameron

According to the rumor the second Avatar may take us on a new planet in the neighborhood of Pandora. So I guess Avatar 3 would either bring us back to Pandora or somehow jump back to Earth... Well no need to speculate to much about the plot of Avatar 3, we still have time!
;-P