Star Wars, Empire and Jedi, all on the official site.
IIRC audio changes are not covered though.
Alternatively you could check this article on Wikipedia, 'cannot say how reliable it is.
Mod Edit: Unfortunately some of the articles linked to above no longer work. However, the Internet Archive’s WayBack Machine has a working functioning link for them, here:-
Empire Strikes Back
Return Of The Jedi
with doubleofive’s re-upload and compiling of them, here:-
StarWars•com Official 2004 Changes Preservation : SW : ESB : ROTJ
Off-topic: could this be of any sign for the speculated re-release of the movies?
Now, if the hood wasn't so retarded looking, how would you know that?
By his fat neck perhaps.
Recently I saw the poster he has drawn for Celebration IV: men, is that gorgeous! So I went back to see if I missed something and found this. Does anybody have it by chance?
And now that the biggest entertainment event of the year has gone?
Well, that's pretty ridiculous.
I could not agree more.