Will OS X 10.8.3 Support Bootcamp for win8.........?

Apple employees to not participate here. We are end users like you so the only response you could get will be a guess. Apple does not allow discussions of unreleased products in their forums. It's their playground--they make the rules.

Anyone who might be able to answer your question would probably be covered under miles of NDA (Non-Disclosure Agreement) paperwork, so even if anyone knew, they probably couldn't tell you.

probably not

well we hope 😝