Yeah, actually, it is. I've heard they're still having supply chain problems with the iPhone 5. If true, that means that they've made some fairly serious mistakes that they haven't made before.
Pretty sure they have had "supply chain issues" with every single iteration of the iphone and ipad.
Two months. Let's see how the Spring 2013 ipad was doing two months in.
http://www.slashgear.com/apple-new-ipad-supply-situation-eas...
It also really bears mentioning that Apple used to roll out globally over 3-4 quarters to manage supply. This time they pretty much did the whole world in one quarter. There's some interesting discussion that this presages a new standard 6 month release cycle.