That would be the Jonas Brothers' Sept. 14 show at Auburn's White River Amphitheatre. But, according to LiveNation and Team Jonas, it's not because the Brothers don't love them some 206. Via Live Nation:
Due to recent changes in the Jonas Brothers schedule and the addition of several international tour markets on their upcoming Live In Concert world tour, the show in Auburn, WA at White River Amphitheatre has been removed from the current routing, however the Jonas Brothers remain committed to their fans and will look to return to the Seattle area as soon as possible. Tickets for this show will be refunded at point of purchase.
Justin Bieber is still on for July 13 at Everett Events Center.