In a story that Ghost Cult first broke the news globally on last spring, Mayhem Festival is plotting a comeback for 2020. According to a report by Blabbermouth.net,Megadeth and Lamb Of God are rumored to be co-headlining the fests return this year. As of now, there is no confirmation of this, but each band was a former Mayhemfest participant with Megadeth headlining in 2011 and Lamb of God appearing in 2010. The traveling summer-time metal festival was the metal answer to Warped Tour, also co-founded by Kevin Lyman and John Reece and saw Slipknot, Slayer, System of a Down, King Diamond, Five Finger Death Punch, Amon Amarth, Mastodon were among the many headliners over the years. The fest shut down following the low-attended 2015 fest with Slayer and King Diamond topping the bill.