If somebody orders a Retina MacBook Pro today, it's pretty safe to assume that Mountain Lion will be out by the time their order ships. So will Apple either: a) Adhere to what the original order says the machine will come with e.g. OS X Lion. or b) Ship back-ordered MBPs with the very-newly released OS X Mountain Lion. My guess is the former. But is there any precedent for this kind of thing? Cheers!