Originally Posted by Xenocide
Only likely possible headliners I can think of for next year are Avenged Sevenfold, Tool, and only possible coheadliners I can think of are Rob Zombie or Korn.
Unless they go more of a hard rock route like in 2008 or 2011 and throw on Staind as a coheadliner.
I think A7X/5FDP are likely for Uproar next year. I may be wrong but I don't believe A7X is heavy enough for Mayhem Fest. I know Godsmack/Disturbed aren't much heavier but if they drift towards more hard rock not only does it stray from their fanbase even more (nu, death, core) but for those who can only afford one concert to go to (damn you poor economy) this could make them choose between Mayhem & Uproar which they probably don't want to happen.