Sweden's IN SOLITUDE has been confirmed for next year's edition of the 'Wacken Open Air' festival, set to take place August 4-6, 2011 in the small town of Wacken in Schleswig-Holstein, northern Germany.

The festival billing is now shaping up as follows (in alphabetical order):

APOCALYPTICA
AVANTASIA
BLIND GUARDIAN
EXCREMENTORY GRINDFUCKERS
IN SOLITUDE
KHOLD
KNORKATOR
MAYHEM
OZZY OSBOURNE
SEPULTURA
SUICIDAL TENDENCIES
WARRANT

Source: www.BlabberMouth.Net