I know there are more coded "mottos" but the only one I can think of off the top of my head is "there's something in the air" when Jobs introduced the MacBook air. With now three different iPhone OS devices, rumors of MobileMe going free, and Apple's huge new data center in North Carolina, I see the "Center of the App Universe" being a metaphor. The center meaning the cloud (MobileMe) and the app universe meaning your iDevices. So hopefully we will see over the air syncing of your media and apps; no more plugging your device in to your computer to sync it. Just my speculation.