Rock am Ring is celebrating its 30th anniversary next year and Rock im Park is marking its 20th year - both it seems with Slipknot headlining. No comment from the Knot as yet except for a photo and links on their Facebook page.

Bands already announced for Rock am Ring and Rock im Park include Asking Alexandria, In Flames, Lamb Of God, Motorhead, Skindred, Foo Fighters, Papa Roach and Parkway Drive.