George Lucas talked to MTV and he reassured that Star Wars: Episode III - Revenge of the Sith is the last live-action film in the saga (though a TV series is in the works, more on that here).

"The original 'Star Wars' was only three films, and that was what it was meant to be," Lucas said. "After a lot of pondering and thought, I went back to do the back story, but that pretty much tells the story. Episode six is the end. There isn't any more to it."

Lucas added that he hopes to start shooting Indiana Jones within a year.

For more spoilerish quotes from Lucas about "Episode III," hit the link above.