 The album version of Earth Intruders (which differs from the iTunes Store version both in terms of mixing and track length) was leaked to the internet on April 24, 2007 due to the full album being made available accidentally on the UK iTunes Store on April 23, 2007 for a total of six hours, two weeks before the album's official release date.A digital-only "Earth Intruders – Club Mixes" EP was released on the iTunes Store in the US/UK on May 21, 2007.The European iTunes release contained only three of the original five tracks.