Thanks to our friends at Club Jade for bringing this to our attention. You can skip ahead about 3 minutes and get to the juicy parts.
I'm sure the story will have changed drastically, but in this, Mark Hamill seems to imply that Luke will be coming back as a ghost? That's what I got out of it anyway.
If nothing else, we need to be prepared for rumours about the story coming out of every corner of the galaxy and we need to take them all with a grain of salt. Chances are good we won't know much about the story for a long, long time. And when we do find out, it'll be much more easily identifiable as true.
What is true, however, is that George Lucas told Mark Hamill about this project both during the original trilogy era, and last year when he had lunch with Hamill and Carrie Fisher to tell them about the new trilogy.
As news becomes available, trust we'll report on it.