Gentleman (and Ladies) don't panic. Here in Greece there's only one thing that takes up more mens time than soccer and it's bikes. There are over 25 monthly motorcycle magazines in print and everyone is a so called expert.
Anyway I have read that the 2 different models (which were put out the begining of this year) will have different color (colour) engines. The 98hp version will be black with a black frame (by fame I am referring to the aluminum piece in between the gas tank and the engine) and the 78hp will be silver. This has nothing to do with previous models which were in fact 98hp with silver details.
There are a few more tweaks done to the new s2 model as well I will try and find an article for you guys.