For about a month and a half now, we've been staring at the Summerfest lineup with a lot of bands called TBA staring back – including the former Ozzy Osbourne Amp headliner slot on the Fourth of July. This morning, however, all those To Be Announceds have turned into acts, as Summerfest dropped the rest of its grounds stage headliners and its final American Family Insurance Amphitheater main act.

As for the former Ozzy spot, fellow heavy metal rockers Megadeth have graduated from opening act to main act, with Papa Roach, Pop Evil and Badflower serving as special guests for a whole day of rock beginning at the Amp at 4 p.m. on the Fourth of July. Makes sense. Tickets for that show will go on sale beginning Friday, May 31 at noon at the usual spots: the Summerfest website and Ticketmaster.

Then there's the rest of the grounds stage headliners, listed below: 

June 26

5:45 p.m. – Bok Nero (Miller Lite Oasis)
6:30 p.m. – Max Styler (Miller Lite Oasis)
7:30 p.m. – Tisoki (Miller Lite Oasis)
8:30 p.m. – QUIX (Miller Lite Oasis)

June 27

4 p.m. – Paul Oakenfold (Miller Lite Oasis)
6:30 p.m. – The Unlikely Candidates (Uline Warehouse)

June 28

8 p.m. – tiLLie (Johnson Controls World Sound Stage)

June 29

6:30 p.m. – Walker Hayes (Miller Lite Oasis)
8 p.m. – Ra Ra Riot (Briggs & Stratton Big Backyard)
10 p.m. – Lifehouse (U.S. Cellular Connection Stage)

June 30

3 p.m. – Hotel California: A Tribute to the Eagles (Uline Warehouse)
6 p.m. – FILMORE (U.S. Cellular Connection Stage)
9:45 p.m. – Tori Kelly (BMO Harris Pavilion)

July 2

8 p.m. – Patrick Park (Briggs & Stratton Big Backyard)
8 p.m. – Jacob Latimore (U.S. Cellular Connection Stage)
10 p.m. – Liz Phair (Briggs & Stratton Big Backyard)

July 4

6:30 p.m. – Renee Blair (Miller Lite Oasis)
8 p.m. – Levi Hummon (Miller Lite Oasis)

July 5

4 p.m. – Berlin featuring Terri Nunn (Harley-Davidson Roadhouse)
8 p.m. – Masta Ace (U.S. Cellular Connection Stage)
10 p.m. – T.I. (U.S. Cellular Connection Stage)

July 6

8 p.m. – Tegan Marie (Uline Warehouse)
8 p.m. – SHIM (Briggs & Stratton Big Backyard)
9:45 p.m. – Bleachers (Harley-Davidson Roadhouse)

July 7

8 p.m. – Willy Porter (Uline Warehouse)
8 p.m. – Moon Taxi (Miller Lite Oasis)
10 p.m. – The Strumbellas (Miller Lite Oasis)
10 p.m. – JOHNNYSWIM (Johnson Controls World Sound Stage)

And now that should be just about everyone when it comes to Summerfest headliner announcements. The only thing left to do now is begin the Big Gig, which will take place June 28 through July 7 (with an off-day on July 1). Get pumped for that – and stay tuned to OnMilwaukee for updates, reviews and more during the rest of the summer festival season.