According to a number of reports including this one at Macrumors.com a customer in Japan received an unexpected surprise when he opened his newly purchased Mac Mini as the enclosed OS X Install DVD apparently was for OS X 10.6 Snow Leopard. Whether this is a hoax or true is unclear but from the number of rumours spreading over the last week or so it is fairly clear that the launch date for Apples latest big cat is very close now.
