It doesn't make sense that Target gets 3 new songs. Yes sometimes Target gets extra new songs (eg 20/20 experience by Justin Timberlake) but I don't believe that it's the same case with Ghost Stories, because I think (only speculation) that Ghost Stories is about a love story. So it means that it's a complete story. You can't add songs to a completed story and 3 new songs only for the US is unlikely and further The 20/20 Experience had no story.