- Insertion of vertical scanlines into the holographic projections of Leia.
- Changing of graphics during the Death Star Battle of the "aiming computer" displays
- they fixed the "jump cut" when 3PO and R2 are walking past the shooting stormtroopers at the beginning, when the explosion to the right is detonating
- they fixed the "jump cut" during the beginning of the movie when R2 unrolls his third leg, after Leia gave him the plans...
There are probably more...
And while I´m now watching the 2004SE for comparisons: There is still lots of film grain in the 2004SE, so all this talk about a digitally washed up version is really stupid. The only thing they totally fucked up in the restauration is the colour.