RCM bought the Gobstopper out for the Time Attack round at Oulton Park earlier this year.
Gobstopper II was originally due to debut Summer 2012, but its still under construction. There have been a few open days at RCM over the summer and the Gobstopper II has been there for all to see: but with a strict no photography rule!
Although I have no doubt that they are going to build a car thats as quick (or even quicker!) than the first Gobstopper, I doubt they are going to build anything as good looking!