Yummie, according to Microsoft's own docs, the new Xbox will be:
"Always on, always connected"
"Kinect is required to be plugged in"
"All games must be installed on HDD"
Let's not forget that the Kinect is actually a camera! Apart from blocking used games (very possible given this specs) it means that you're buying a 24/7 connected-to-the-mothership camera here, usually directed at the living room to boot.
In short: You're buying a real-life telescreen! (Telescreens are the television sets in "1984", they act as display devices but they also work as surveillance cameras, monitoring the room they are in and sending the stream to the powers that be)
Given this setup, I think it's only a matter of time before it user-identification through the camera is REQUIRED before using the console (according to rumors, your real name is a requirement for using the PS4, so this will be only a step-up). Maybe this will happen in the next version. You know, to prevent abuse, hackers, cheaters, pedophiles in in-game chats etc.. don't worry, an excuse will be found. Don't call me alarmist. Just a few years ago, the thought about blocking used-games and an mandatory always on-power/on-line console would have been absurd.
I also like it how the new Xbox SDK installer uses the Matrix font. Freudian slip?
Using footage from a movie about being a slave for machines from birth to death sets the mood quite nicely for Telescreen 720.