Pink Floyd fans are speculating the band could be set to tour again or release a new album.

The "Comfortably Numb" hitmakers have teased them by posting a countdown to a big announcement today on a website marking the 20th anniversary of their final record, The Division Bell.

Divisionbell20.com features a continuous clip of satellite images of the moon and urban landscapes to a soundtrack of Pink Floyd's music. The site has also teased the hashtag #TBD20, referencing the fact the band's last record was released two decades ago in March.

Members Roger Waters, David Gilmour and Nick Mason - who haven't performed together publicly since the Live 8 benefit show in 2005 - briefly reunited during Waters' The Wall tour stop at London's O2 Arena but they have previously hinted at the possibility of a reunion.

In September, Nick told NME magazine that he was "ready to go but holding my breath," and later said he thought Pink Floyd would most likely get back together for a charity concert, although fans feel the 20th anniversary is a big enough celebration and have taken to Twitter to campaign for a reunion in coming months.