towne32 said:
I suppose the most likely explanation is that the 2004-2011 changes were made in 1080p only. Do we know if that's the case? These parts would need to be redone or upscaled or something.
Well, anything filmed while on set of Revenge of the Sith is in 1080p for sure (i.e., ghost Anakin and Ian McDiarmid's emperor).