Dates on the third slide. Likely takes out Hawthorne Heights, I See Stars, Anberlin, Emery, This Wild Life. Thursday, Saosin, Cartel, Armor for Sleep, Stick To Your Guns all possible unless they have tour dates I'm not aware of.
Cartel are on the HH tour, AFS will probably be there too. That show is at the Salt Shed at the end of June
Neither are on the Chicago date unless I'm reading it wrong. I guess AFS could get added to the Salt Shed show after the Bayside tour since they join the HH tour the next day. On another note, Days Away are teasing at least a show with Something Corporate. Bring them to Riot too.
My bad. I'm guessing AFS will be added after the Bayside date. Edit: According to this AFS are on the Chicago date.
Afs will officially be added to the Chicago show after the bayside tour rolls through. On the riot fest tweet for the 20 year of tears tour it has more bands to be announced on it
I have mentioned this before, but LS Dunes said in an interview that they would like to play Riot every year, so probs they do get them and Thursday to play (the fest or an aftershow) as a package deal.