a) Lucas took out the ROTJ Anakin floating head for the 2004 disk
and
b) Hayden has been digitally inserted and dubbed into Shaw's unmasking scene. (possibly for a 2007 release)
I only heard this through my cousin and the grape vine. Personally, I don't care either way. I'm getting the originals and am for the most part, pleased.
And as much as I hate the idea of Lucas replacing Shaw with Hayden, I am very curious as to how it would look. Not that I would ever accept the altered scene, but it would be neat to see what it would look and sound like, see how creeped out I would be with the change, and then shrug my shoulders and go "Huh, that was kind of weird. Whatever. *tosses out disk*"
Could Hayden be put in age make-up and pull off a non-creepy, heart breaking line of "Now, go my son. Leave me."? I actually want Lucas to do this so I can go, "Wow, huh. Yea...uh, no. Shaw was way better."