After switching around my refurb order this weekend (turned out the 3.0 MP was last year's high-end processor), I have a theory.
I THINK that in the refurb list, if it shows a certain % off of the original price, and shows the original price along with the "sale" price, then it is a current model. That is to say: able to be configured as such in the apple store as a new machine.
The 3.0 I was looking at is indeed last years Clover Processor. I switched the order to the (confirmed) Harpertown one (circled). The CSR agent I spoke with when updating the order kind of went through the same thought process as I.: