Joining Slipknot and Disturbed on the main stage will be Dragonforce and Mastodon. In addition, the tour will have two second stages: one sponsored by Jägermeister and featuring Sevendust, Airbourne, Five Finger Death Punch, 36 Crazyfists and the Jägermeister Battle of The Bands Winner. An additional second stage will feature Machine Head, Black Tide, Suicide Silence, The Red Chord, and Walls Of Jericho.

Main Stage:

Jägermeister-Sponsored Second Stage:

Jägermeister Battle of The Bands Winner

Second Stage #2:

"This summer we are truly bringing Mayhem," says Corey Taylor from Slipknot, who will close each show. “Slipknot is excited to be a part of it, and to be able to bring the new chapter of our history to the masses. We are already working, building and designing a new show. We cannot wait. We cannot lose. Get ready for Mayhem!"

"We're really looking forward to being on the first Mayhem tour," adds Disturbed vocalist David Draiman. "It's a great lineup, which should set a new standard for rock tours and we're excited to be a part of it!"

Projected dates are as follows although an official itinerary is forthcoming.

****Important: The above-listed dates have not yet been confirmed by an official source and should be treated as a rumor until an official announcement is made.

Slipknot will be out in support of its new Roadrunner album, expected in August. Disturbed’s new album, "Indestructible", is due in May.

Slipknot percussionist Shawn "Clown" Crahan recently told Revolver magazine that the masked nine-piece from Iowa is coming from a "different place" as it prepares to record its fourth major label album. When asked what has changed since 2004's Vol. 3: (The Subliminal Verses), Crahan replied, "I can't stress enough that we're going into this from a different place. When we did (2001 album) 'Iowa', we hated each other. We hated the world; the world hated us. The next record ('Vol. 3') was like rehabilitation. We had all this healing that needed to happen. Now, everything feels good because we feel good."

Slipknot went on hiatus at the end of 2005, when it finished touring in support of Vol. 3. Since then the band members have worked on various other projects, including a second album from singer Corey Taylor and guitarist Jim Root's Stone Sour.

Crahan said, "These breaks that we take, they get our appetites going. They let our brains slow down and then speed up again. We gotta decompress for a little bit just to feel human if we're going to be forced to be here in this reality."

The full interview with Crahan is in the February issue of Revolver, on sale now.

Slipknot is scheduled to enter the studio in February with producer Dave Fortman, who's previously worked with Mudvayne and Evanescence.