Few weeks ago Katherine Jackson's shady business partner, Howard Mann released a song "Opis None" claiming that this is one of the unreleased materials from the MJ master tapes they own.
I have posted many articles about the background of the so called "MJ master tapes", just search for "Vintage" in my blog. In a nutshell: the master tapes owned by Henry Vaccaro and jointly used by Mann and Katherine are useless. These are already known and released songs, demos, studio sessions, some recordings from the Jackson Family Show in the late 70's, and some rare materials from Jackson siblings and other acts. And on the top of that they can not do anything with the tapes, because they don't have the approval neither from Universal, Sony and the MJ Estate. This is why neither Vaccaro, later Universal Express and now Mann can not do anything with the tapes.
Finally to close down this topic I have uploaded the full list of songs from the so called "MJ master tapes" that you may download here: http://www.scribd.com/full/43405353?access_key=key-aaxn8s51t7n6otjbpnv