Yesterday, the Led Zeppelin Facebook page was updated with a picture that just said ‘five’ in an old Zep typeface. As nobody knows what this means, speculation is rife, and we’ll get to that in a second. But Jimmy Page’s manager tweeted “it’s almost here. I’ve seen it and heard it. Almost 5 years to the day.” The main money is on a DVD release of the 2007 O2 Zep gig, as that would be five years on. The wildly optimistic money is on a reunion tour.