The Apple on the front of the Mac Mobile would function as a "home button" because if you were to tap it, the desktop would show. (you could arrange it to send you to a number of different places within OS X if you'd like)
The back and side of the Mac Mobile resembles a sort of iPad Mini / iPhone look and comes with 4 USB 3.0 ports, 2 lightning, and one ethernet. A Mag 2 connector allows charging and docking from the tablet. The gray plate at the bottom will extend to work as a kickstand on the go. The overview shows that the Bluetooth 4.0 keyboard works with the Mac Mobile and acts as a Matte Black backlit keyboard.
and most other colors (green, blue, pink, yellow)