I would suspect most any dealer would probably say the same thing to anyone who called, whether it was true or not, so the caller wouldn't think they could get the price knocked down on the ones still available ... If they told me they sold the '09's for $5k less than asking, my offers would start lower than that for the '08's!
You may be right though the rep offered an incentive--though a small one--on the 08"s.
Most dealers are not going to tell you what they sold the car for and I did not ask. And from
what I've seen on their TV show, there's no way in hell I'd believe them! :< )