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.