Heres a photo of the Dev Kit:

http://www.ebay.com/itm/ws/eBayISAPI...#ht_500wt_1232
Heres what Digital Foundry posted about the initial Leaked Photos:
The devkit itself is an anonymous-looking black box, said by one next-gen developer to contain parts that have much in common with a modern "standard gaming PC". The shots depict a dashboard reminiscent of the current Xbox 360 test kit launcher, featuring a basic compiled program, dubbed "D3D11Game1" along with "NuiView" - which on 360 at least is a simple tool for rendering camera views and data from an attached Kinect peripheral. No next-gen Kinect hardware photos have yet to surface, but it is said to be considerably revised from the existing Xbox 360/PC peripheral.