Royal Thunder was added to the Chicago date. I'm not sure if they're on the whole tour or not. I know they said they were trying to tour around that time and someone said that their tour with The Devil's Blood fell through.
9/4 Cult of Luna
9/11-13 Riot Fest
9/19 Uncle Acid & the Deadbeats
9/25 Cattle Decapitation
9/26 D.R.I. and/or Alcest