I've gotten contradictory responses from Apple employees about whether or how long supplies may be constrained. They say they can't tell what supplies will look like until they process all the preorders. So this is my question: could this become a Wii-like shortage? If so, how long might it last? I'm not too antsy, but I do need to purchase this before late June for various reasons. Can't believe Apple didn't think they'd have a hit on their hands.