I have the SE bonus features on a fan created dvd. I'm pretty sure it was laserdisc sourced. In addition to the documentary that was also on the vhs tapes, there were also slideshows of concept art plus all three special edition trailers. The '04 bonus dvd only had one of the SE trailers. I thought the second release of the SE box set on vhs was designed to tie into the saga numbers since it must have come out the same time as the Phantom Menace on video. I only saw the Jedi tape and it had a starwars.com promo with duel of the fates playing with clips of the 4 released films. Was the episode II preview only on one of the tapes.