Organisers of Knebworth music festival Sonisphere have confirmed when the first 2014 line-up announcement will be made.

The Comet: Sonisphere's Twitter reveals that the 2014 headliners will be announced at 5.30pm on Monday, December 2Sonisphere's Twitter reveals that the 2014 headliners will be announced at 5.30pm on Monday, December 2 (Image: Archant)

Rock fans will find out on Monday, December 2 at 5.30pm who has been booked to play the UK leg of the international touring festival.

Sonisphere’s official Twitter feed (@Sonisphere) tweeted yesterday (Thursday): “Hold the front page. Been given a launch time 5:30pm on Monday … Catchy!”

The show will return to the grounds of Knebworth House after a two-year absence from Friday, July 4 to Sunday, July 6.

No bands playing Sonisphere’s fourth edition at Knebworth have been announced yet.