ELO's Discovery & Out Of The Blue remasters are about to be re-issued on Blu-spec CDs. As I understand it from reading this, there are fundamental jitters and vibrations when standard CDs are made. These new discs eliminate that. Doesn't say anything about the music having a higher resolution, though.
In any event, Discovery is set for a December 24 release and Out Of The Blue is expected on January 21, 2009. These will be Japan-only releases so far.
Correct me if I'm wrong, but I suspect Blu-spec CDs are almost the same thing as SHM-CDs (Super High Material CDs) only made by a different company.
Tom Petty's Full Moon Fever is being released on SHM-CD in early December. But, if it's not remastered by the artist, I would think the improvement would be miniscule for most people. It's the same CD sound only less jittery??