The kit will be made available sometime in July but an exact date has not yet been published.
The new JCW tuning kit drives the MINI Cooper S to completely new heights of performance: The kit boosts the output of the Twin Scroll turbocharged engine from 175 h.p to 192 h.p (141 kW). And the maximum torque is 250 Nm between 1750 and 5000 rpm. In fact with the overboost function, temporary peak values as high as 270 Nm are possible in the range from 1750 to 4500 rpm. This means the MINI Cooper S accelerates from 0 - 62 mph in only 6.8 seconds and onto a maximum speed of 145 mph (where permissible).
Package includes:
- JCW air filter system
- Stainless steel sports exhaust
- Exhaust manifold for operation at higher temperatures
- Turbocharger air filter air guide
- Modified engine electronics system
- Activation code for engine control unit (specific to chassis number)
- JCW emblems for front grille and tailgate
- JCW engine badge with serial kit number
- JCW certificate of authenticity
The retail price on the kit is £1463 inc VAT and FITTING.
Taken from another forum post

It looks like it's officially released to the dealers and not as high a price as i expected, especially with the discount.
........................Off to phone local dealer to add to order....................more money
