As an Lucasfilm DVD/Blu expert, I know this:
-American Graffiti. (No big altertations, just the opening. The rest remains unaltered. I expect this will be the same thing come the Blu-Ray release)
-Clone Wars Theatrical Movie (No alterations of any kind)
-Star Wars OT (2004 Versions. Will possibly be the same for Blu-Ray. The OOT is already available on DVD officially, albeit the 1993 Laserdisc transfers. No word yet for the OOT on Blu, but George is not saying "no".)
-Star Wars PT (TPM DVD release is the DVD version, AOTC is Digital Theater version so will call that a draw, and ROTS just features a tiny change and nothing more)
-THX 1138 (2004 Director's Cut. No DVD/Blu-Ray release of the Theatrical Version)
-Indiana Jones Quadrilogy (Not a single change. Crystal Skull remains untouched. The first will most likely and obviously remain unaltered for Blu-Ray)
-Clone Wars Micro Series (no changes on DVD, just optical wipes chapter-to-chapter. Not a big deal)
-Droids and Ewoks (Re-edited "movie" versions. No season box sets yet.)
-Ewok Movies (Caravan just features the international title "Caravan Of Courage: An Ewok Adventure. Battle For Endor features a line alteration and a line subtraction near the end.)
-Howard The Duck (no changes)
-Clone Wars CGI TV Series (No changes. Season sets feature the episodes in original 2.39:1 widescreen. Season 1 features 7 episodes in Director's Cut versions which is cool.)
-'The Young Indiana Jones Chronicles (Re-edited versions)