The event, which took place in London’s Hyde Park for the first time last summer, returns to that location in June.
In addition to the London shows, there will be a two-day spin-off event taking place in Leeds at Harewood House.
Goldfrapp, Pharrell Williams and DJ Shadow are among the bands performing on June 24, while The Who will headline the following day June 25, with Super Furry Animals and The Flaming Lips also on the bill.
More acts are expected to be announced soon, including the headliner for the first day in Leeds.
For ticket availability go to NME.COM/Gigs.