Three new participants have been announced to participate in Roadrunner's 25th Anniversary Concert, taking place at the Nokia Theater in Times Square on Thursday, December 15th. These are none other than former Judas Priest and current Iced Earth singer Ripper Owens, Shadows Fall vocalist Brian Fair, and Seemless singer Jesse Leach - ex-Killswitch Engage (could a KSE original member reunion be in the works???) Already confirmed participants include Jamey Jasta of Heatbreed and MTV2's Headbangers Ball, Scott Ian of Anthrax and members of Slipknot, Killswitch Engage, Trivium, Machine Head, Sepultura, Soulfly, Biohazard, Life of Agony and more. Tickets are available now through, at their outlets across the country and via phone by calling 212-307-7171.