The Led Zeppelin reunion concert remains at present a one-off gig. But a single performance might not be the only thing to come out of Robert Plant, Jimmy Page, and John Paul Jones getting back together (with John Bonham's son Jason on drums). Page recently dropped hints to the Winnipeg Sun that, with the four prepping together for the show, new material could organically arise. (How a small Canadian paper got this scoop is anyone's guess.) Page said he would be "surprised if their wasn't" some new material that came out of the whole shebang. He explained further, "We're musicians--as we're playing we'll probably be coming up with all manner of things."
Zeppelin 'may make new material' (BBC News)