The pics are excellent.
Note the "Line Out" jack on the dock. That's very nice.
Also note that the buttons and jog dial are recessed a little. The rumor renderings made them look like blisters that stuck up, which would cause accidental pressings, looked icky, etc. They're actually flat and recessed. I guess they're probably touch-sensitive and don't move when pressed.
The front face looks like it ought to be waterproof - should reduce problems due to spills, etc. So the only sensitive spots on the new iPod are the headphone jack and the connector on the bottom.