Arctic Monkeys confirmed to play on 5/30 via their instagram.
According to @arcticmonkeysus (twitter) that Instagram thing was fake and the only confirmed AM date is Firefly at the moment
even so, i cant see am NOT playing primavera sound. theres a very real possibility that they were one of the acts those people were freaking out about in that video. after all, they have gained massive amounts of popularity + respect over the past few years