The surprisingly cheerful documentation included with the supposed test kit explicitly warns against tilting the camera manually, as it's already equipped with a "motorized tilt mechanism" -- all the better to see you with, my dear. The "Quick Start Guide" also shows how the early model of the camera connects to an Xbox 360 development kit via USB and a power outlet via a split cable.
It's not known how representative these photos are of early Project Natal development kits, nor how much of it will change by the time the final product arrives this holiday. Microsoft did not comment on the veracity of the images, with a representative telling Joystiq: "We announced earlier this year that Project Natal will launch this holiday, and our teams are working hard to bring the best experiences to life. We have nothing further to announce at this time."
Microsoft Xbox 360
Microsoft Xbox One