Having stock shortfalls is nothing new for Apple...
Anyone remember the change from the bump on a stalk iMacs to the all-in-one current configuration?
They had no stock for a few months as I remember. I even tried to order one of the stalk mounted monitor models and ended up with one of the all-in-one models instead...
Judging stock levels is an art rather than a science. One of our distributors shows over 1,000 models in stock and a ton of mini's too...
Who knows if Apple will shoot themselves in the foot IF there is a change...
Wishing something isn't going to make it happen... Hell, with this ****** economy, I wouldn't be surprised if Apple pulled a Magrathea and held off on the updates for a while. Remember that the current system costs less over time to manufacture so Apple keeping the current model going for a while means more money. Provided people are still able and willing to buy them...