Full lineup just announced!

May 31 – NEKO CASE with special guests Joey & John of Calexico
June 4 – ETTA JAMES & The Roots Band
June 14 – FEMI KUTI with special guests Bela Fleck & Toumani Diabate
June 21 – DAVID BYRNE
July 7 – INDIGO GIRLS
July 13 – DEATH CAB FOR CUTIE with special guests Andrew Bird & Ra Ra Riot
July 19 – THE WALLFLOWERS
July 31 – DIANA KRALL
August 4 – CHICAGO
August 14 – CHRIS ISAAK
August 19 – LOS LOBOS & LOS LONELY BOYS - The Brotherhood Tour
August 25 – THE AVETT BROTHERS
September 1 – BONNIE RAITT & TAJ MAHAL, BonTaj Roulet – Alone & Together
September 3 – BOOKER T. & THE DBT’S (Drive-By Truckers)

More info here.