Star Wars Episode VII, the first Star Wars film produced under Disney's ownership of Lucasfilm, won't be released until 2015 (they don't even have a director yet) but it already has set the internet on fire with rumors about the potential crew, cast, story, etc.
"It’s like, okay, Obi-Wan was dead when episode four started, so maybe everyone thinks I’m dead and we’ll find out what happened to Mace Windu [...] I can come back as one-armed or a one-handed Jedi that’s still around that didn’t actually die [...] I could do that or be a ghost hologram. I don’t care. I just want to stay associated with the franchise. Not that I won’t, because I’ve been in three of them," Jackson said.
And, since Episode 7 will be a new and original story, any of the possibilities Jackson suggests could be feasible (as long as it works out for the producers and the eventual director). Jackson also added that, though he currently has "three films in progress" (including an upcoming Avengers) appearing in another Star Wars episode would be "worth the sacrifice."