There was a diagonal optical wipe in the theatrical release that was replaced with a straight cut on the DVD. This was then restored on the BD, so the BD is the theatrical version.
http://www.dvdactive.com/editorial/articles/star-wars-the-changes-part-four.html
It isn’t. There was some CG crap added to the Wookie huts and there are some changes in the soundtrack.
https://www.youtube.com/watch?v=IiCn0O4aF_8