Pitchforkmedia reports that Myles Kennedy—Scott Stapp's replacement in Creed, begatting Alter Bridge—has been rehearsing with Page, Jones, and Bonham and could be a possible stand-in for Robert Plant on any future Led Zeppelin tour.
The whole idea is ridiculous and Page/Jones should be roundly beaten for even contemplating taking something out on the road without Plant and calling it Zeppelin. Coverdale/Page worked fine. So did Page/Plant. I'd suggest PJB or some such if this actually comes to pass.