The official Lollapalooza lineup won’t be released until Wednesday, but what claims to be a leaked lineup went viral over the weekend.

The blog Pretty Much Amazing published a photo of a “pretty convincing Lollapalooza internal memo” listing acts such as the Red Hot Chili Peppers, the Black Keys, Black Sabbath, Jack White, and Florence + the Machine, the Shins, Justice, Passion Pit, the Weeknd, Sigur Ros, M83 and Franz Ferdinand and more.

The festival has a new deal with the Chicago Park District, and will be responsible for shelling out millions in annual city and county amusement and state liquor taxes. This means that the price to throw the concert will likely be much bigger than in years past. A sell-out crowd could mean life or death to the festival.

See CBS Local Chicago for the complete leaked lineup.

Early Bird Passes are now sold out. Regular Priced Passes, VIP Passes and Travel Packages still available. bit.ly/Hdhe2W—
Lollapalooza (@lollapalooza) March 27, 2012

-Jay Tilles, CBS Local