Hal 9000 - in case adywan is too busy to get back to you on this, or doesn't want to cover it in this thread, let me refer you to a much more recent update to do with that issue near the bottom of this link - http://swrevisited.wordpress.com/rotjr-facts/

(for the record, I'm happy with this decision and am hoping it means he won't be going down the 'The Other Boleyn Girl' footage route. It was a clever enough idea as a way to make sense of Leia's ROTJ dialogue, but I'm hoping this means he'll be sticking with actual ROTS footage one way or another. But that's all for another day)