The festival billing is shaping up as follows:
Amon Amarth
Axel Rudi Pell
Callejon
Cathedral
Einherjer
Epica
Hammerfall
In Extremo
Kampfar
Korpiklaani
Machine Head
Nevermore
Tristania
Wacken Open Air festival was honored with a Live Entertainment Award in the "Festival Of The Year" category. This award recognizes distinguished achievements in live entertainment and is given out by Live Entertainment Award (Lea) committee. The winners were announced on March 11, 2008.
Fan-filmed video footage of Epica's performance at the Metal Female Voices Fest on October 18, 2008 in Wieze, Belgium can be viewed below (clip uploaded by YouTube user "Filmpje114").

