Talking about the 440 series: no physical buttons on the trackpad, keyboard changes, a lot harder to take apart, 12GB max memory. It's basically not a Thinkpad anymore but a black MBP wannabe.
Nice; that's the way my original X1 Carbon looks and I'm really happy with that keyboard. In particular, I absolutely love the nipple and the proper mouse buttons. Is there any chance of the linked keyboard actually making it back into the X1 line as well?
I almost updated to the new one however they completely murdered it with the "adaptive" change. Capacitive function keys, home and end on the caps lock key, what _on earth_ were they thinking?
