A couple weeks ago we updated you on Lollapalooza Chile. Now, according to the Chicago Tribune's Greg Kot, (and confirmed by Billboard) "reliable industry sources" place Eminem, Muse, and Foo Fighters in headline slots for this year's Lollapalooza USA, 8/5-7 in Chicago's Grant Park. He adds that you can expect Best Coast, Girl Talk, Crystal Castles, Lykke Li, and at ...