A MAJOR announcement will be made on Monday about the latest additions to the Sonisphere Festival at Knebworth House. The two-day rock event at the Hertfordshire stately home will take place on August 1-2. It will be headlined by metal giants Metallica an

A MAJOR announcement will be made on Monday about the latest additions to the Sonisphere Festival at Knebworth House.

The two-day rock event at the Hertfordshire stately home will take place on August 1-2.

It will be headlined by metal giants Metallica and nu-metal favourites Linkin Park.

A statement on the official Sonisphere website says: "The adverts have gone to print and the ink on the contracts is still drying.

"Sonisphere has its fourth line-up announcement this Monday at 9am... Synchronise watches."

Others already confirmed for the camping festival include Irish legends Thin Lizzy, Welsh band Bullet For My Valentine and grunge gods Alice In Chains.