doubleofive wrote: Does anyone know of any other sources? I'm sure there are some Star Wars Insider articles (zombie says he thinks he can get those to me). I don't need information about the release and hype, I'm more concerned with the making of and reasoning behind the changes.

Although the 'release and hype' stuff are not what you are after, most articles are 95% that to get to the one tidbit you are looking for.

For instance, MTV did a special at the time and there's a short segment on the technical merits/changes. Available on TWC289 as with other Special Edition era tv programs/news reports:

http://originaltrilogy.com/forum/topic.cfm/Treadwell-Collection/post/483342/#TopicPost483342