Take it with a pinch of salt, but over the weekend this pretty convincing Lollapalooza internal memo hit the internet. I mean blurry photographs of lineup lists aren’t set in stone, but it looks pretty legit – and includes headline acts by The Black Keys, Black Sabbath, and The Shins. Check out the full thing after the jump.

Other names that may mean something to you include Die Antwoord, Florence + the Machine, and Miike Snow.

The full and legitimate announcement isn’t due until Wednesday, which will confirm or deny this sucker.

[Source: PMA]