My understanding was that there was a single out last week that featured THPGU as well as another of his news ones along with 2-3 live tracks from his most recent tour. I think "Find Out For Yourself" was one, maybe "Coma". It was posted on this site I believe. Itunes doesnt even have the Greatest Hits yet and if they do their not going to let you buy the 2 new songs without buying the whole album. They never do when new or bonus tracks are thrown on regurgitated "Best ofs".