Another change has gone down recently to the Coachella 2012 lineup. Cat Power will no longer be performing at this year's festival in Indio. No statement has been released as to why.
It's not unusual for acts to drop from Coachella (Amy Winehouse, Cocteau Twins, Doves, Grace Jones, etc in past years) or be added (Beck, Kanye West, Madonna, M.I.A., Prince, etc) and the lineup is always subject to change. I'll keep you posted if anyone is added to replace Cat Power!