I can't find the article I read earlier.
Anyway Cameron was talking about the next movie and mention it would be out in 2016. Also he noted that the sequels will include what's underseas on Pandora, and that it will expand around the current characters and add new characters. Kind of like Star Wars, where did this Darth Vader guy come from, let's just go and see. It also mentioned they are making new software for this sequel, so it won't look the same or 5 years old.
It's making me think the new land is going to pull in crowds and with a movie coming out it will pull in more and keep the momentum going. Also I wonder if we will have some of the undersea elements in and an attraction or that there is going to be expansion material right away.