The band made the album available Friday for download from its website. When Radiohead announced the album release on Monday, the band said it would be out Saturday.
Fans can pre-order an MP3 download for $9 or a higher-quality WAV version for $14. For approximately $50, there's also an extensive vinyl edition with deluxe packaging.
Radiohead also released a black-and-white video for the song "Lotus Flower" off the new album.
The Associated Press contributed to this report.