updated line-up:
Danny Tenaglia, Wally López, Elio Riso, Steve Lawler, David Guetta, John Digweed, Sasha, Victor Calderone, Groove Armada, Pete Tong, Deadmau5, Paul Woolford, Dan Ghenacia, Fedde Le Grand, Nick Fanciulli, Smokin Jo, Tom Novy, Steve Aoki, Oscar Colorado, Jonathan Ulysses, Camilo Franco, Oscar Cano, Javi Muñoz, Gerardo Niva, Bruno from Ibiza, Igor Marijuan, Hofer 66, Lewis Ryder (Winner Pioneer Contest, Jonathan Tena, Joan Ribas, Mr. Kelsey, Mr. Bosco, Mikki, Monique 69, Rubyks Cube, Carlos Simon, Dan Tait (Pioneer), Ernesto Altés, Fernando K-Po, Deep Collective, Juan Gómez, J. Louis, Taito Tikaro, Joachim Garraud, Shlomi Aber, Marc Antona, Oriol Calvo, Reche, José María Ramón, Ramón Castells, Deep Josh , Tuccillo, Paul Darey
source: their website
(thanks futurecyborg)