Ozzy Osbourne, Metallica, Jonathan Davis of Korn, Serj Tankian, Hellyeah, Sevendust and Shadows Fall, among others, are scheduled to appear at this year's one-off Ozzfest, to be held Aug. 9 at Pizza Hut Park in Dallas.

Other main stage acts on the bill are Cavalera Conspiracy, Apocalyptica, In This Moment and an all-star tribute to late Pantera guitarist "Dimebag" Darrell Abbott. Second stage acts are Devildriver, Kingdom of Sorrow, Soilent Green, Witchcraft and Goatwhore. The Sword, Drowning Pool and Rigor Mortis will handle duties on the third stage.

"We're going to be a stadium destination festival for now -- we have gone past doing the sheds every summer," says Ozzy's wife, Sharon Osbourne, who is producing Ozzfest with AEG Live. "We've given everyone else the blueprint and we have to keep evolving Ozzfest. This is just the beginning; AEG Live and I have a lot of new ideas for Ozzfest."

Ozzfest will be Osbourne's only concert performance this summer. Tickets for the one-day festival will go on sale May 31 via Ozzfest.com; prices have not yet been announced.

Last year, the Osbournes created a stir when they revealed the Live Nation-produced Ozzfest would be a sponsor-driven, free event, and acts would be asked to play without being paid. The 25-date amphitheater tour featured such artists as Lamb Of God, Hatebreed and Lordi, among others.