L.A. Weekly's putting it on October 6th. 

 

Pitchfork has the lowdown on the bands: "Bloc Party, Justice, uh, Satellite Party-- and provides them with yet another big stage. Along for the ride are the Shout Out Louds, Turbonegro, Teddybears, the Comedians of Comedy, Augie March, the Raveonettes, the Cool Kids, DJ Mehdi, Autolux, the Noisettes, SebastiAn, Kavinsky, the Aliens, Busy P, So Me, Kinky, and others."