I suppose I shouldn't so disappointed about this news, however much it is a completely massive amount of bullsh*t on Lucas's part - Return of the Jedi has been dead to me for quite a while (many thanks to Uncle George for adding that retarded Jabba Palace musical number, that needless montage of the galaxy celebrating, and Hayden F****ing Christensen as Anakin's ghost....), so it's not like Lucas can screw up the movie any more than he already has for me personally.
-__-

Regardless of this news, though, I'll still be keeping my pre-order for the BD set and I still have every intention on making new HD versions of my Prequel Edit trilogy once I get my hands on the BD set.