The EditDroid versions have a few of the changes over time.
IIRC there differences between the Faces and Definitive Edition laserdiscs (and even early and latter pressings of the DE lds) - probably get more info on them from the people in the OT Preservation thread.
It can get a bit complex on exactly what has changed over time - esp as the original cinema reels had differences on them between 70mm and 35mm reels, let alone the sound differences - I think...