I'm currently an international student in the UK. I've decided what Mac to get but there was just a slight problem that has been nagging me. In case Snow Leopard is released at the WWDC and/or the current Macbooks are upgraded, approximately how long will it be before they will hit the shelves? The reason I ask this is because I go back home on the 20th of June and wont be back till late September. I will probably miss the last date of the back-to-school special if I delay my purchase till my return. So as an estimate, how long does it take for new macs to be available after their release announcement?