According to the Daily Star, Brian May has tapes of the late Freddie Mercury working on fragments which he plans to turn into songs and release at some point.
He told the tabloid: "There are still some things in the vaults with Freddie messing about on vocals which fans won't have heard. There are bits of him tinkering around, which could be used. I expect they will get released at some point because I am sure people will want to hear them".
With that in mind, how about an official release for the fantastic Queen bootleg, also made from Freddie outtakes, that has been residing at http://www.mash-ups.co.uk for a while now?