I've heard rumors of Pianos Become the Teeth joining in on this MTB/CS co-headliner, but I'm not sure how accurate that is. PBTT are trying to reach new audiences and change their sound up a bit, so it makes a lot of sense.
Oh man, if that rumor is true, my friend is going to be so stoked. Circa Survive and Pianos are his two favorite bands, with Minus the Bear top five as well. Also, Pianos put on one of the shows I've ever seen.