The annual Firefly Music Festival has announced its 2015 lineup, which features Nashville rockers Kings of Leon and Las Vegas’ the Killers headlining the weekend. This year’s festival will be Firefly’s fourth iteration since its inaugural concert back in 2012, and will run from June 18-21 at the Woodlands of Dover International Speedway in Delaware.

This year’s headliners will be joined by Morrissey, Foster the People, Modest Mouse, Hozier, Bastille, Run the Jewels, Spoon, Empire of the Sun, Cage the Elephant, Awolnation, the Kooks and many more. Check out the complete roster below:


As you’ll notice, the poster includes a third, blurred-out headliner, who’s still yet to be revealed -- which has to be a sign of some really, really exciting news to come.

Tickets haven’t gone on sale yet, but you can get details about festival passes on Firefly’s official website. As we wait to hear who the final headliner is, check out the lineup announcement trailer in the video above.