One of the many upgrades that we'll see on the 2005 MINI Cooper S is the use of Eaton's 5th Generation Supercharger. Here are some details on what's new:

The 5th Generation Superchargers incorporate an innovative rotor coating that allows for tighter internal clearances compared to previous applications. These tighter clearances allow for increased supercharger efficiency and performance, resulting in improved horsepower and torque at lower engine RPMs.

This coupled with shorter gearing should help decrease 0-60 times for the MCS. Hopefully we'll get some details soon on the improved exhaust and ECU – the other two upgraded components that help give the 2005 MCS an extra 7hp.