Apple Store MacBook “We've got something special in store”
apple.com
apple.com
http://store.apple.com/ gives the same message, heck, even http://www.apple.com/us/shop/goto/mrmattyboy/select gives the same message.
By interrupting current carts and letting customers wait a few moments it help easing out this kind of bad surprise. And by the time store get back up frustrated customer already had time to figure out that he just have to make a phone call to modify order and that's not so harsh all in all.
Oh one? Is that just a little jest or gesturing at something bigger?