Looking for any place which might have a list or discuss changes to these movies, here's what i've got so far: (will sort though to corroborate) There's now a tab for these links in the spreadsheet. (see first post for most recent)
Wikipedia - SW Change List http://en.wikipedia.org/wiki/List_of_changes_in_Star_Wars_re-releases
Wikipedia - SW Change List - Pre Deletion http://en.wikipedia.org/w/index.php?title=List_of_changes_in_Star_Wars_re-releases&oldid=451698874
OT.com discussion of Wikipedia page http://originaltrilogy.com/forum/topic.cfm/Wikipedia-List-of-changes-in-Star-Wars-re-releases-errors/topic/12359/
Wookiepedia http://starwars.wikia.com/wiki/List_of_changes_in_Star_Wars_re-releases
SaveStarWars.com SE Change List http://savestarwars.com/specialeditionchanges.html
OT.com Neil S. Bunk's 2004 change discussion http://originaltrilogy.com/forum/topic.cfm/Any-Interest-In-A-Corrected-2004-DVD/topic/1711/
Neil S. Bunk Audio Revision List http://originaltrilogy.com/FORUM/topic.cfm/Star-Wars-coming-to-Blu-Ray-UPDATE-August-30-2011--NOOOOOOOOOOOOOOOOOOOOOOOO/topic/11438/page/181/
doubleofive 2011 Visual Change https://picasaweb.google.com/102542760950977079734/StarWars2011Changes
OT.com ESB & ROTJ Audio Mixes http://originaltrilogy.com/forum/topic.cfm/ESB-ROTJ-Audio-Mixes/topic/10519/
Paul Ens' SW SE Annotations http://www.theforce.net/swse/index.html
The Geek Twins 'complete' list of SW Changes http://geektwins.blogspot.com/2011/09/want-to-see-full-list-of-changes-to.html
blam1 Star Wars VideoDisc site http://www.blam1.com/StarWars/
OT.com 2007 list of changes http://originaltrilogy.com/forum/topic.cfm/The-Big-List-of-Changes-to-the-SW-films/topic/7556/
The Phantom Menace
DVDActive.com Prequel Trilogy Changes http://www.dvdactive.com/editorial/articles/star-wars-the-changes-part-four.html
Attack of the Clones
Galactic Trade Federation Comparison http://homepage.ntlworld.com/russdawson/gtf/ep2.html
Revenge of the Sith
Star Wars
Starkiller's Guide to the Mono Mix http://homepage.ntlworld.com/russdawson/mono/
Michael Coate : May 25, 1977: A Day Long Remembered http://www.fromscripttodvd.com/star_wars_a_day_long_remembered.htm
The 70mm Engagements Of The Original "Star Wars" http://www.fromscripttodvd.com/star_wars_70mm_engagements.htm
DVDActive.com Star Wars Changes http://www.dvdactive.com/editorial/articles/star-wars-the-changes-part-one.html
OT.com Dialog Change discussion http://originaltrilogy.com/forum/topic.cfm/The-Definitive-tractor-beam-Close-the-blast-doors-Blast-it-Biggs-Wedge-you-dont-taste-very-good-ooooo-Preservation-Guide/topic/13428/
doubleofive Star Wars Special Edition Changes https://picasaweb.google.com/102542760950977079734/StarWarsSpecialEditionChangesHD
StarWars.com Official 2004 SW Change page https://picasaweb.google.com/102542760950977079734/StarWarsComOfficial2004ChangesANH
"Treadwell Jay's SW-SE Change List
" http://home.earthlink.net/~treadwell_jay/starwars/anhindex.htm
StarWars.com http://www.starwars.com/episode-iv/release/video/f20060825/index.html
Empire Strikes Back
DVDActive.com Empire Strikes Back Changes http://www.dvdactive.com/editorial/articles/star-wars-the-changes-part-two.html
doubleofive Empire Special Edition Changes https://picasaweb.google.com/102542760950977079734/EmpireSpecialEditionChangesHD
StarWars.com Official 2004 ESB Change page https://picasaweb.google.com/102542760950977079734/StarWarsComOfficial2004ChangesESB
"Treadwell Jay's ESB-SE Change List
" http://home.earthlink.net/~treadwell_jay/starwars/esbindex.htm
StarWars.com Official 2004 ESB Change page http://www.starwars.com/episode-v/release/video/f20060901/index.html
Return of the Jedi
DVDActive.com Return of the Jedi Changes http://www.dvdactive.com/editorial/articles/star-wars-the-changes-part-three.html
doubleofive Jedi Special Edition Changes https://picasaweb.google.com/102542760950977079734/JediSpecialEditionChangesHD
StarWars.com Official 2004 RotJ Change page https://picasaweb.google.com/102542760950977079734/StarWarsComOfficial2004ChangesRotJ
"Treadwell Jay's RotJ-SE Change List
" http://home.earthlink.net/~treadwell_jay/starwars/rojindex.htm
StarWars.com Official 2004 ESB Change page http://www.starwars.com/episode-vi/release/video/f20060908/index.html