According to The Mercury News in the Silicon Valley:
"The Jan. 17 issue of Billboard, citing “trustworthy intelligence,” says Green Day will use [Coachella] to return to live performance after more than three years away. Also mentioned as likely performers: No Doubt, the Red Hot Chili Peppers, the Killers, the Black Keys, Keane and Booker T. Jones."
I call it fairly trustworthy, but then they cite the board, which is very strange.
If this is real, then ugh. Green Day? Really GV? REALLY?!