The Intel stuff was all just a gauge to see how it would be recepted in the public. My guess is that you will see an AMD version of their system in 6-12 months, and a general version of the OS for any x86 hardware in 12-18 months.
Also, Cringley knows what he is talking about. He has for a long time, and still does. Hell, he was employee #12 at Apple, and helped move operations out of Steve Jobs parents' garage. That's gotta get him privy to something at Apple.
Never ask two questions in a business letter. The reply will discuss the one you are least interested, and say nothing about the other.