I don't want anyone to get the impression that I'm starting rumors or whatnot. But while I was working on the re-launching of my MJ site, one of the things I was...and am planning to do is archive old news stories of MJ going back as far as how long my page has been online. (1997)
One of the things I stumbled upon was an old news article from Planet Jackson.com
In September/October of 2001, they had a news article which said Michael was not only planning a video for "Unbreakable", but they stated, at the time, was being worked on at Lucas Arts studio (the Star Wars people). I don't know if it was ever finished, or how far along the project got...that was around the same time Sony started messing everything up.
Like I said, not trying to start rumors, but it makes me wonder if there actually is something for Unbreakable that's been locked away all these years.