Epic Records chairman says he has plans for a future release featuring vocals from pair
Posthumous album will be released on May 12
The Timbaland-produced song will appear on new album 'Xscape'
Usher features on King Of Pop's posthumous track
Posthumous release features eight unreleased songs worked on by producers including Timbaland
The singer's brothers say they will fight his ex-wife if she considers child custody
'Do You Know Where Your Children Are?' will appear on May's 'Xscape' release
Producers including Timbaland contribute to album's eight unreleased songs
Jane Goodall claims she confronted Jackson over treatment of pet
'Slave To The Rhythm' is produced by Timbaland