First off, the songs on this album were recorded in the years spanning from 1982 to 2009 (27 years; 2+7 = 9)
Second, two songs that seem to have a lot to do with the hoax (breaking news & monster) both have 9!
Breaking News (length) = 4:14 (4+1+4 = 9)
Monster (length) = 5:04 (5+4 = 9)
Third, on the back of the album, it says there are 9 unreleased songs on the album (because, at the time of release, Hold My Hand was the only single that had been released).
Fourth, there have been 3 singles released already (at the time of this post). That leaves 7 songs on the album.