Speaking to 6 Music, Robert Plant revealed he’d been able to dig out some lost Led Zeppelin tapes and will be releasing choice cuts on series of reissues. He called them “very, very interesting bits and pieces” (quotes via the Guardian.)
But there might be a small problem in taking them public: "I had a meeting with Jimmy… We baked them up and listened to them," and that went well, But “I'm desperately trying to [use] this one track – or the two tracks – [with] John Paul Jones singing lead…And so far [Jones is] up to giving me two cars and a greenhouse [to leave] them [off] the album."