KATAKLYSM have been forced to cancel their appearance at this year's edition of the Wacken Open Air festival which is scheduled for August 5th - 7th in Wacken, Germany.

A band statement reads: "Unfortunately because of our extremely tight schedule between the new album, EX DEO's Euro tour, Heavy MTL open air and Ozzfest all jammed together this summer, we just can't make the trip to Wacken this year. The organizers have been kind enough to rebook us for next Wacken 2011..of course if the world still exists. So we apologize to all you maniacs that wanted to see us destroy Wacken this year. You'll have to wait next year!"

In other news, Berlin's country & western cover band THE BOSSHOSS are confirmed for the festival.

Acts confirmed for W:O:A 2010 include: AMORPHIS, ANVIL, ARCH ENEMY, ASTRAL DOORS, ATROCITY, THE BOSSHOSS, BROILERS, BRUTUS, CALIBAN, CANDLEMASS, CANNIBAL CORPSE, ALICE COOPER, CORVUS CORAX, CRUCIFIED BARBARA, DEAD MEANS NOTHING, DEBAUCHERY, DEGRADEAD, DELAIN, DESPISED ICON, THE DEVIL'S BLOOD, DIE APOKALYPTISCHEN REITER, DIE KASSIERER, EDGUY, END OF GREEN, ENDSTILLE, EQUILIBRIUM, ETERNAL LEGACY, EVILE, FEAR FACTORY, FREI.WILD, GHOST BRIGADE, GOJIRA, GRAVE DIGGER, HACKNEYED, HANGGAI, HELLS BELLES, HOLY GRAIL, IHSAHN, ILL NINO, IMMORTAL, IMPERIUM DEKADENZ, IRON MAIDEN, JOB FOR A COWBOY, KAMELOT, KAMPFAR, KATANA, THE KELTICS, KILLING MACHINE, LAKE OF TEARS, LETZTE INSTANZ, LIZZY BORDEN, LOCK UP, MAD MAX, MAMBO KURT, MAROON, METSATÖLL, MÖTLEY CRÜE, THE NEW BLACK, NIGHTMARE, ORDEN OGAN, ORPHANED LAND, THE OTHER, OVERKILL, RAVEN, ROTTING CHRIST, SCHELMISH, SECRET OF THE MOON, SKANNERS, SLAYER, SMOKE BLOW, SÓLSTAFIR, SOULFLY, SPIT LIKE THIS, STRATOVARIUS, SUICIDAL ANGELS, SVARTSOT, 1349, TIAMAT, TOTAL RIOT, TARJA TURUNEN, TÝR, U.D.O., UNLEASHED, VARG, VICTIMS OF MADNESS, VITA IMANA, VOIVOD, W.A.S.P., WISTARIA.

For an initial running order click here.

For more info visit www.wacken.com or the Wacken Open Air Myspace page.