Ditching the mirror allows you to make a slimmer body with the lens closer to the sensor.
The camera has a mode dial plus direct-access controls for ISO sensitivity, white balance, and focus; it still manages to look pretty minimalist, though.
It looks a bit boxy from the front.
It has the same touchscreen-based controls as the HDC series.
Hasselblad is launching with two XCD-mount lenses, a 45mm f3.5 and 90mm f4.5.