Hellfest 2018 will be held between June 22 and 24 in Clisson, France, and will be headlined by Avenged Sevenfold, Iron Maiden, and Judas Priest. Some supporting acts include Deftones, Alice In Chains, Marilyn Manson, Nightwish, Stone Sour, Megadeth, Parkway Drive, and a ton more.
The festival will also include Dimmu Borgir, who have a new album coming next year, Limp Bizkit, who have a new album coming never, and Korn frontman Jonathan Davis as a solo act. I mention Davis specifically because The PRP is reporting a rumor that there's a Jonathan Davis solo album coming with a full tour behind it. So we'll see how that works out.