Yeah, we've seen that already. ;)
http://originaltrilogy.com/forum/topic.cfm/Star-Wars-Episode-VII-to-be-directed-by-JJ-Abrams/post/629818/#TopicPost629818
Carrie was on the Daytime Emmys recently, and she looks good! The rest of the gang are in good shape for their age as well. If Christopher Lee could do a SW film in his early 80's, I don't see any problems.