Just want to share my thoughts on the new ESB audio commentary, that is contained on the new blu rays.
I listened to the whole thing now. It is really interesting, some nice background information. How much of the information is new to you depends on your knowledge about Star Wars of course.
Alec Guiness is there once, Harrison Ford once or twice, Frank Oz three times, Gary Kurtz one or two times, Billy Dee Williams once, Peter Mayhew ~ 3 times, Murren a few times, Mark Hamill a few times, ...
Mostly talking persons are Kershner, Burtt, Lucas, Fisher.
My impression is 60% is unused footage from the audio commentary, done for the 2004 dvds. The rest is sampled together. Nothing seems to be new stuff - it's from the archives.
It's sad that there is no subtitle information about the time the interview has been done. Carry Fisher is talking about how wonderful they have added the clouds there, but since there is a OOT and a SE, you can't be sure if she is talking about the artwork from 1980 or 1997. You have to rime everything together yourself. She is refering to the picture she is just seeing, so it's probably from the audio commentary of 2004. It would have been a lot easier, if the year of the interview has been provided like in "Building Empire". It's easy for Carry Fisher but not that easy for all the snippets.
Gary Kurtz is talking about white snow / Blue snow right in the first minutes. They intend to have white snow! They even were afraid that any temperature changes would make the white snow blue.
GL is talking during the Vader is father reveal scene how different the experience is if you watch it 1-6 instead of 4-6, 1-3. That part is interesting to hear.
Burtt is sometimes really boring when he talks about each of the sounds origin. Some of his talk was nice however.