I think the temptation to have "The Chain" in a revampted form will be irresistable. It'll be down to who they get to do it. There are dream and Nightmare scenarios.
Dream scenarios (People who have the soul to pull off a good cover)
Peter Green, obviously.
Slash.
Jimmy Page.
Zakk Wilde.
Metallica maybe.
Nightmares (People who'll just make a dreadful screechy noise in the same key as the Chain)
Yngwie Malmsteen
Steve Vai
Moby
Anybody who tries to play the solo without a les paul, an SG a telecaster or a strat.
I have this horrid, creeping thought in my head telling me to expect the above nightmares to been seen walking into a studio in Maida Vale with Mutt Lange and Celine bleeding Dion any day now