MINI2 has details about the new JCW package available to current and new owners of the MCS.

“By installing an even more powerful and higher revving compressor, John Cooper Works has turned the MINI Cooper S top model intoan excellent driving machine.

The performance figures can be compared to those of renowned sports cars: 200 horsepower (147 kW) at 6,950 rpm give this power pack a top speed of 226 km/h.
The generous torque of 240 Nm available at 4,000 rpm catapults the powerful MINI to 100 km/h in only 6.7 seconds. The car's pulling power is also very impressive: only 5.6 seconds are needed from 80 to 120 km/h.
In order to be able to use the new compressor with the higher rpm level and load pressure, modifications to the cylinder head and the engine electronics were necessary. A special rear silencer gives the car a powerful acoustic impact.

The suitable outfit for the power MINI.
In order to emphasise the sporty driving impression of the tuned MINI Cooper and MINI Cooper S models, John Cooper Works not only offers sports seats but also an 18 inch wheel rim unique to the MINI up to now.
The sides of the sports seats are raised for improved lateral hold, the shoulder area is reinforced and the thigh support can be adjusted to provide greater comfort and safety. The seats are available in nearly all regular colour and upholstery designs and can also be ordered with seat heating. The Easy-Entry function remains unchanged.

18-inch light-alloy rims also give the MINI a powerful and sporty look. The wheels in star spoke design featuring five widening spokes run on 205/40 R18 tyres.” (MINI2.com)

All US specific info will be released most likely at the New York auto show and will be available for immediate delivery or installation at any MINI dealer. Prices have yet to be annouced.