Frontman Jamey Jasta discussed the project in a recent interview:
The record's called "For the Lions." All the artwork is based around all these different stone lions, and it's basically because each band is like a lion in their own game, like a leader. So we tried to think of each genre and subgenre, and grab a band that really affected us. It's coming with like a 20-page liner booklet with stuff from each guy about when we got the record, when we heard the band, how it affected us.
So we did a lot. And only 12 are going to make it on, because that's like, the industry rule or whatever.
In case you were wondering, the band did choose "Hate Breeders" as their Misfits cover.