The record, their first since 2003's Hail To The Thief, will be called In Rainbows and can be downloaded by fans on October 10.
The album will become available in a Discbox from December 3. Featuring the album CD, two 12" vinyl, a hardback lyrics book and new songs, the package will cost fans £40.
Speaking on the band's official website, guitarist Jonny Greenwood said: "Hello everyone. Well, the new album is finished, and it's coming out in 10 days.
"We've called it In Rainbows. Love from us all. Jonny."
The In Rainbows tracklisting is:
The tracklisting on the £40 Discbox is: