Of course this begs the question of just what LFL did with the actual physical o-neg once it was scanned into the computer for the lowry restoration. Since it was only mastered at 1080x1920 and the theoretical limit for a 35mm movie is, what, 4k? Then again, AOTC and ROTS are stuck at 1080, so maybe it's all a part of the revisionism keeping the OT in line with the PT.

In a related story, the o-neg of The Godfather has apparently been given a multi-million dollar restoration at the behest of Coppola and Spielberg:

http://hollywood-elsewhere.com/archives/2007/08/godfather_resto.php