Eh, I'm sure there are plenty of regions and stores that are sold out. It's part logistics and part marketing-speak. It's close enough to not really matter, though I don't really understand the point of a PR person saying that when it will keep people from checking and possibly stumbling over one that was in-stock.
On a more important note, anyone else really hate that image of the hovering XO with the Kinect levitating above it and the controller seemingly hooked to it like a baby possum? It bothers me somehow. I don't understand why it's supposed to be floating.