This year's SXSW festival has already confirmed Marnie Stern, Thurston Moore, Toro Y Moi, Mac DeMarco, Charli XCX, Angel Haze, Sky Ferreira, Major Lazer, Wavves, Savages, Rhye, and tons more. Now they've announced a third wave of artists who will head down to Austin in March to get in on all of the sponsored chaos. The additions include Vampire Weekend, Icona Pop, Eddi Front, Merchandise, Sepalcure, Local Natives, Bleached, Waxahatchee, the Thermals, Bleeding Rainbow, Maria Minerva, Eagles of De...