Warped Tour may indeed be full of surprises with its 20th anniversary tour. Linkin Park played a surprise set, and another bomb was dropped today. Sleeping With Sirens will be playing several dates of this year’s festival. They will be playing July 23 through July 27. Be sure to catch them while they’re on! Check out a tweet from the group after the jump.
— Sleeping With Sirens (@SWStheband) July 1, 2014