So how many headliners have been leaked? Is Tom Petty the only headlining act because Harper headlined a couple years back. If Mayer's playing, is it with the John Mayer Trio? Finally, is there in chance in hell that we finally get Manu Chao?

Only the one headliner is confirmed.

DMB is assumed to be a second, although that isn't 100% confirmed.

The John Mayer Trio is "no more" according to Mayer but I'm really not sure how much truth there was to that.

I guess you mean the band "John Mayer Trio" is no more? The assumption being that John Mayer will be playing shows with another band.

John Mayer is still listed on Pollstar as playing ACL on Friday (and Telluride Blues & Brews Festival on Sunday).

Pino Pallidino is going to be touring with The Who over the summer/fall, so it won't be the trio. I seriously doubt John and Steve Jordon would go out without Pino.

Yeah, not just that, but at the end of a show with the trio John Mayer essentially said "thank you, this is the end of the John Mayer Trio" meaning the trio of Jordan, Mayer, and Pallidino is no more. Yeah, Mayer will be playing, but it won't be in that trio, that's all I'm saying.

Billboard.com is reporting that BoDeans will be playing on September 17...

Randy Rogers Band will be playing Sunday according to their website

Matt Costa is confirmed. He told me himself.