I know this isn't a strict "music" post, but next week they're releasing the footage from the rehearsals that took place before Jackson's last planned show. I'm not a huge Jackson fan so I'm not sure if the video I just saw is a new song or not, but it's being released in tandem with the film. It might be new, it might not, but I've definitely never heard it and the video is pretty key.
http://www.yeahoyeah.com/mjvideo.aspx?id=2348