It's the use of a promotional photo from Hellbilly Deluxe II that makes me think it's a joke.
If it is a joke, it's an official one, if you see what I mean: http://robzombie.com/2013/02/unlock-...-hear-a-tease/
18/12 Black Sabbath
14/1 Iced Earth
18/1 Lamb of God