Looks like the cat's out of the bag for this year's Listen Out festival, leaked the old fashioned way: posters. Although the national beats-heavy festival's lineup was supposed to drop at midday on triple j, Project U noticed a casual poster on a Sydney telegraph pole this morning. US rapper and general champ Childish Gambino is heading the bill, returning after a slam dunk set at last year's Splendour in the Grass. He'll be sitting pretty alongside returning UK producer SBTRKT (DJ set), Brooklyn rapper Joey Bada$$ and recent Coachella smashes Odesza on the bill. Local favourites like Alison Wonderland, Client Liaison, Roland Tings, Hayden James and masked producer Golden Features will be there, alongside international drawcards like American hip hop duo Rae Sremmurd, LA producer ILoveMakonnen, Lido and Ryan Hemsworth. LISTEN OUT 2015: Childish Gambino SBTRKT (DJ set) Joey Bada$$ Alison Wonderland Odesza Rae Sremmurd Golden Features Dusky Ryan Hemsworth ILoveMakonnen George Fitzgerald Lido Hayden James Client Liaison Roland Tings Halfway Crooks Jordan Burns Triple J Unearthed winner and more to be announced Saturday, September 26 Catani Gardens St Kilda, Melbourne Sunday, September 27 Ozone Reserve, Perth Saturday, October 3 Centennial Park, Sydney Sunday, October 4 Brisbane Showgrounds, Brisbane Tickets on sale Thursday, June 18 at midday. Head to the Listen Out website for more details, tickets and lineup info.