georgec said:
Quick google search (thanks pat man!) shows they killed him in Fate of the Jedi. Is that the EU to which you're referring?
The following has been done, too, but in the film maybe they can have Dark Luke. I love how Mark describes his ideas for ROTJ here:
http://www.youtube.com/watch?v=nAYwQIERib4#t=11m40s
Interestingly enough JJ is at the table as well. It's a nice video.
I meant killing Luke off mirrors Obi Wan a bit too much. When Lucas originally did it, it was a last minute script change, (which Sir Alec reportedly wasn't too thrilled about) and then he had to create a new Jedi master to train Luke in the sequel.