Pitchfork has the details, this is an awesome lineup:
The lineup includes Björk, the Arcade Fire, the Beastie Boys, Interpol, M.I.A., Spoon, the Hold Steady, Grizzly Bear, Neko Case, the Thermals, the Blow, Loney, Dear, the Black Angels, Electrelane, Manu Chao, Mirah, and Bad Brains.
It looks like Ozomatli are also slated to play. I’m looking forward to it. This will be my fourth year in a row attending.