Natal is not a product. Snow Leopard was announced, what, two years ago?
true but apple is the king of hype also the products are pretty diffrent.. having devkits must mean the at least got a somewhat finished api..
btw it seems natal is doing at least some processing internally [check out some of the info "dots" here], good for speed but possible bad programability.. i prefer speed in this case though. the speculation continues...
the internal processor info is also on wikipedia.