UPDATE: Sept. 30 3:00 p.m.
A spokeswoman for Radiohead told the New York Times late today that the band "definitely will not be playing" a show in Manhattan's Wall Street section this afternoon.
"It's definitely not going to happen," Laura Eldeiry told the Times. "It's a false rumor." She said the band had nothing to do with the original "announcement."
A spokesman for "Occupy Wall Street," Patrick Bruner, quickly sent out an e-mail blast: "I got hoaxed. Radiohead was never confirmed. Completely our fault."
The organizers sent off a bit of a media frenzy when the original e-mail and tweets promoted the "surprise" concert.
ORIGINAL POST: Sept. 30 12:00 p.m.
The Twitter-sphere is working overtime in Manhattan today. A not-so-secret "secret" has leaked out that Radiohead will play an impromptu concert for "Occupy Wall Street" demonstrators at 2 p.m. Mountain Time today. The performance is expected to coincide with the closing bell on the New York Stock Exchange.
Radiohead is in the New York area, playing shows this week at Roseland Ballroom in midtown Manhattan, but the group hasn't confirmed its "surprise" appearance on its Web site or Twitter account.
New York transit unions, representing 38,000 workers, joined the Occupy Wall Street protest today, railing against a laundry list of concerns, from the wars in Afghanistan and Iraq to income inequality and corporate influence in politics.