Zombie said a long time ago in this thread that he heard from within Lucasfilm that they had been in the process of digitally scanning and archiving every single solitary piece of film from the Star Wars series, and that’s why there were so many deleted scenes and old-school documentaries on the blu ray box set. It makes me wonder to what extent some of the work regarding an OT restoration was already done when Disney bought Lucas out. I have a feeling that the 4K Star Wars restoration that apparently started under Lucas was going to have more changes than the bluray we got ended up having.