To conclude, as for now we have:
Definetely not at Sziget: Muse, The Killers, Bring Me the Horizon, Sum 41, Yungblud, Skillet, Passenger, Scarlxrd, Borgore, Virtual Riot, Funtcase, Martin Garrix, Dimitri Vegas & Like Mike, Marshmello, Alesso, Lost Frequencies, Yellow Claw, Carnage, Becky Hill, Moksi, Paul Kalkbrenner, Alok, Jonas Blue, Malaa, Modestep, Timmy Trumpet, Dillon Francis, Imanbek, Nervo, Sikdope, Robin Schulz, Vini Vici, Paul Van Dyk, Topic, Blastoyz, Parov Stelar, Tom Walker, Sam Feldt.
Some August European lineups near Sziget: