Talk of a Led Zeppelin reunion just refuses to go away.

Billboard reported in July that the band may get together for a proposed tribute to the late producer/record mogul Ahmet Ertegun at the O2 in London in November,

Now on Ledzeppelin.com the date 11.13.07 mysteriously appears with the familiar Zep symbols. And several people saw the band touring the O2 during Prince's recent stand at the new 20,000-seat London venue. A press conference next Wednesday (Sept. 12) in London may clear everything up.

There has been talk that tour producers AEG Live and Michael Cohl's CPI (Rolling Stones, Genesis, Barbra Streisand) have put in offers on a Zep tour featuring founding members Jimmy Page, Robert Plant and John Paul Jones with late drummer John Bonham's son Jason on drums. But it is also well known in the industry that standing offers have been on the table for a Led Zeppelin tour for more than a decade.

Nov. 13 also has another significance: it's the release date of a new Atlantic/Rhino two-disc, 24-track best-of set, "Mothership." Additionally, a deluxe reissue of the soundtrack to the 1976 concert film "The Song Remains the Same" with previously unreleased material and a new DVD edition of that movie will arrive Nov. 20 via Atlantic/Rhino and Warner Home Video, respectively.