Artwork for Norwegian melodic black metallers DIMMU BORGIR's upcoming album, In Sorte Diaboli - which is scheduled for an April 24th release in North America - has been banned by retailers.

The North American version of the 'The Serpentine Offering' single will be available for digital download at iTunes.com beginning April 3rd (not March 30th as previously stated) and will include the following three songs: 'The Serpentine Offering', 'The Serpentine Offering' (Video Edit), and an instrumental version of 'The Heretic Hammer' as an exclusive track.

As previously reported, Dimmu Borgir have announced their headlining tour of the US and Canada with UNEARTH, KATAKLYSM and DEVILDRIVER which begins Friday, April 20th in Cleveland, Ohio. Dates can be found here.

"It's been too long... The wait is over - FINALLY!" stated DIMMU songwriter/guitarist Silenoz. "It is with great anticipation that we look forward to start, for once, a World Tour on North American soil! We're excited to have Unearth, Devildriver and Kataklysm on this diabolic ride and can't wait to meet all our loyal fans and friends old and new once again. Come join us in The Invaluable Darkness!"

Unearth's Trevor Phipps predicts "this tour is going to be an un-fucking-real diverse clash of heavy music. We haven't hit the road with DIMMU since the 2004 Ozzfest. Devil Driver is always a great band to share the stage with and Kataklysm is one of the best death metal bands around today. Good times ahead!"

KATAKLYSM lead singer Maurizio Iacono chimes in: "We especially thank Silenoz for hand-picking Kataklysm for the tour. We are honored and look forward to sharing the stage with the other bands on the package - Unearth and Devildriver. We promise you that heads will roll!!"

Teaming up once again with producers Fredrik Nordström (OPETH, ARCH ENEMY, AT THE GATES) and Patrik J. Sten at the new Studio Fredman in Hyssna, Sweden, In Sorte Diaboli is Dimmu Borgir's first concept album and a treatise on modern day political and social abuses of organized religion. An epic tale set in medieval Europe, this first-person account of an acolyte is told through his own journal entries, depicting his personal struggle with the teachings of the church. Experiencing a life-altering epiphany, he abandons the church completely, and his spiritual victory is won through his rejection of the concept of god.

In Sorte Diaboli will be available in North America in two different formats: a jewel-case CD and a limited edition digipak (plus bonus track, bonus DVD with the Patric Ullaeus-directed video for 'The Serpentine Offering', 'The Making Of In Sorte Diaboli' in-studio/behind the scenes footage).

The complete track listing is as follows: 'The Serpentine Offering', 'The Chosen Legacy', 'The Conspiracy Unfolds', 'The Sacrilegious Scorn', 'The Fallen Arises', 'Heretic Hammer', 'The Sinister Awakening', 'The Fundamental Alienation', 'The Invaluable Darkness', 'The Foreshadowing Furnace'.

More info regarding the worldwide versions of In Sorte Diaboli can be found here.