Fans of the legendary rock band have speculated there will be a world tour since they reunited for a one-off show last December (2007).
Singer Plant has frequently denied the band is to hit the road for a string of gigs, but rumors the other three members - Jimmy Page, John Paul Jones, and Jason Bonham - have been rehearsing together have sent gossips into a spin.
Now the comeback looks to be a step closer to reality, with reports suggesting Tyler has taken over vocal duties during practice sessions in London.
Don't get your hopes up, these are UK press reports. - Read more