To be more imprecise, Carrie Fisher will start filming her scenes for Episode VII “in a few weeks”. I guess from this we can conclude that Leia does not feature on Tatooine, or at least not in external shots.
Fisher was at the Hay Festival of Literary & Arts when this tidbit dropped. She also said on the quality of the Episode VII script, “They’ve got the writer Larry Kasdan, who wrote the Empire Strikes Back; I thought that was the best of the three that we did. He’s back, and J.J. Abrams is incredibly talented. So you do the math.” (For those who don’t know, besides being an actress, in the ’90s Fisher was one of the top script doctors in Hollywood, polishing scripts for movies such as Sister Act and The Wedding Singer, as well as working on George Lucas’ series The Young Indiana Jones Chronicles.)