Y'know, if this 4k job was for the SE, I wonder how they would go about re-doing stuff like Ian as the Emperor's hologram and Hayden's head on Shaw's body.
Maybe they would just take those shots as they are and plug them right into the new version? The TPM blu-ray did the same thing with the lower-res added scenes from the dvd and, from what I heard, it still looked like that even in the theatrically-released 3D version.