Riot Fest has announced another bunch of additions and some changes as well. The new bands added include: Pixies, Joan Jett and the Blackhearts, Suicidal Tendencies, Andrew W.K., Hatebreed, T.S.O.L., Off With Their Heads, The Flateliners, Native, Hostage Calm, The Interrupters, New Beat Fund, and Pet Symmetry.  Motorhead, Bad Brains and Attack Attack have cancelled their appearances.
You can get passes for all three days of the Chicago event here.