In an interview with Showbiz 411 the actress stated:
Sigourney Weaver: "When “Political Animals” finishes shooting, see if you can follow Weaver’s schedule: she goes right into a new Christopher Durang play for a short run at Lincoln Center. Then she films “Avatar” 2, 3, and 4 with James Cameron. That’s right: they’re making three sequels to the blue 3D phenom all at the same time. Weaver says she has no idea how long it will take, or how it’s going to work. “I just show up,” she said."
Cameron himself also recently stated that his production..
James Cameron: "spent the last year and a half on software development and pipeline development. The virtual production methodology was extremely prototypical on the first film. As then, no one had ever done it before and we didn't even know for two and half years into it and $100 million into it if it was going to work. So we just wanted to make our lives a whole lot easier so that we can spend a little more of our brainpower on creativity. It was a very, very uphill battle on the first film. So we've been mostly working on the tool set, the production pipeline, setting up the new stages in Los Angeles, setting up the new visual effects pipeline in New Zealand, that sort of thing. And, by the way, writing. We haven't gotten to the design stage yet. That'll be the next."
