The day they start selling the new MacBook Pro what happens to the old stock? Is it all sent back to Apple that day, or is it held on to for a few weeks.
That's the thing about Apple is they don't have much inventory on hand. In Steve Jobs biography if I remember correctly it said their inventory was no longer than 2 weeks. That's how they can ship their products with the latest software. The process was refined by Tim Cook, Apples inventory was at a couple of months but Cook was able to get it down to 2 weeks or less.
Recent articles had Apples inventory turn at 5 days. Frequently items that were new end up sold through the refurb store. Two friends that bought iPad 2's after the 3 was released got new, not refurb units based on serial #'s.