Thanks to recurring rumors, terse confirmations, and the fact that what everyone demands in a Star Wars is a story of time's effect on the flesh, it's been pretty much guaranteed that the original trilogy's main cast will return for Episode VII. But if you want to hear the news again from a slightly more credible authority, here's some confirmation straight from George Lucas's vocal sac.
In a just-published interview Business Week (via), once again Lucas returned to his old hobby of playing with the order of character-defining Star Wars events, revealing that it turns out Mark Hamill, Carrie Fisher, and Harrison Ford were already in final talks to join a sequel before he even sold his company to Disney:
"We had already signed Mark and Carrie and Harrison--or we were pretty much in final stages of negotiation. So I called them to say, 'Look, this is what's going on.' " He pauses. "Maybe I'm not supposed to say that. I think they want to announce that with some big whoop-de-do, but we were negotiating with them."
While that would seem to pretty much end the discussion of whether the original trio will re-join the Star Wars universe, Lucas, still a master storyteller, teased that there's more to this prolonged casting tale, adding, "I won't say whether the negotiations were successful or not." Unfortunately, after The Phantom Menace, now no one cares when George Lucas attempts to wring excitement out of negotiations.