On sale today--still debating-opening day is the Flaming Lips, Yeah Yeah Yeahs, the Darkness. $54.50 gets you in plus guarantees you admission to Sat (Matt & Kim, Jovanotti, Sharon Von Etten, etc.) and Sunday (Sharon Jones & the Dap Kings cancelled-replaced by Kool & the Gang, Cults, etc.).
Last year's initial didn't get good attendee reviews (lack of food, etc.) hopefully better this year.