We just recieved this in the MotoringFile inbox from a dealer in the UK:

I have some info about the new JCW kits. We are just recieving ours now, but only a limited number of kits have been released to dealers and they all had to be ordered especially for customers!!! There were a few problems with new software to update the chips, but by the time you start to recieve yours it will all be fixed!!!

You are correct, the new kit does take the BHP up to 210 as oppose to 200 in the current kits!!!