The black Wii console launched in Japan on August 1, complete with black Wiimote, Nunchaku and Classic Controller. If you wanted Wii MotionPlus, that's only in one colour: white.
This holiday season, Nintendo is bringing black Wii peripherals to America, but hasn't yet announced a new black console. There is a new bundle — the black Wii Remote is available with a black version of the Wii MotionPlus accessory included. Pricing is still TBA.
A black Nunchaku rounds out the colour coordination. All that is missing is a console.