The concept also imagines a special iPod mode, where the UI is optimised for the smaller, rectangular portion of the screen that’s visible. The mode gets activated when the flap is closed. The click wheel is imagined to be interactive, and can be used to navigate through the iPod interface.
The iPod UI mode is focused towards music, and the Now Playing screen, but can also show notifications, and widgets for Calendar, Maps, Weather and so on.
Just like the iPod touch, the designer showed the cover in multiple, bright colors:Dribbble]