I am surprised there are so many used R66S for sale already. They are awfully expensive though, and it does seem like a used 206 will be a better bet in the long run, as you don't have to throw it away after 12 years.
Currently, the next available delivery for a new R66 is January 2013.
I trust this answers your question....
This could mean demand is high, or they are making them very slowly!