Slipknot have announced plans to stage their own festival this August. Knotfest will take place on August 17th in Council Bluffs, Iowa and August 18th in Somerset, Wisconsin. The lineup for each show includes Deftones and Serj Tankian. Percussionist Shawn Crahan says Knotfest "is a chance for us to bring the sensory-overload of a wild European carnival fest to the heart of America. We're thrilled to delve deep into our catalog and play a long set for fans."

In other Corey Taylor news, Stone Sour have tapped an '80s hair metal icon to play on their new double album -- Skid Row bassist Rachel Bolan. Bolan has been doing sessions with the band in Iowa in between dates with Skid Row and has a few more songs to work on this month. Stone Sour called him in after bassist Shawn Economaki left the group earlier this year.

Stone Sour's as-yet-untitled concept album is expected out in October.

Five Finger Death Punch are teaming with the National Suicide Prevention Lifeline to give the organization some promotion this summer. They've filmed a new PSA for the Lifeline, and they'll include a tag about the organization at the end of their video for "Coming Down," which will debut next Tuesday on Vevo. Finally, one dollar of every ticket sold on this summer's Trespass America Festival will go to the Lifeline.

Seether are the latest act to launch their own festival. But unlike most bands, Shaun Morgan and company have something greater in mind with the Rise Above Fest September 3rd in Gilford, New Hampshire. The festival is named after the song Morgan wrote about his brother's suicide and a portion of the proceeds will go to the National Alliance on Mental Illness New Hampshire. Joining Seether on the bill are Buckcherry, Puddle of Mudd and Black Stone Cherry.

It seems like the feud between Hollywood Undead and former member Deuce may have gotten physical. TMZ reports that Deuce -- real name Aron Erlichman -- filed a report with Hollywood police claiming his former Hollywood Undead bandmates Dylan "FunnyMan" Alvarez and Jorel "J-Dog" Decker attacked him after his show May 25th at Angels and Kings. Cops are investigating the claims but have yet to charge anyone or find that a crime was actually committed. The lack of charges by the police hasn't stopped Deuce from taking action, as he hired high-profile lawyer Donald Karpel to pursue a lawsuit against his former bandmates. The Hollywood Undead camp hasn't commented at all on the alleged fight.