I certainly hope so. Wouldn't that be a fantastic addition to a future album of unreleased material?
The solo version certainly exist!
Pentum on this board made this, this is the closest to the demo
https://soundcloud.com/pentummjj/what-more-can-i-give-more-mj
I'd say a solo version exists but not sure how the Estate would be able to release it in the future because of the controversy that surrounding it around the time of lead up to the original release. Would love to hear it in the future though. I think this song could of been a mega hit!
https://soundcloud.com/pentummjj/what-more-can-i-give-more-mj Here is your answer 2:20I wonder how the pre-chorus sounds, when Michael sings it.