Looks like SkyOS is having some development issues and author is stipulating further development paths.

On one hand, I'm finding SkyOS project pretty amazing with great respect for it's creator; everything is done by one man, from kernel to GUI and apps and these news are sad. On other hand, if author makes it open source, I'm thinking it will be a great win (for author and users), not to say how I will finaly get a chance to try it without paying for it ;)