Sources close to AMD confirmed that there is an R670 chip on their roadmaps and we learned that this is a 65 nanometre part. We heavily suspect that this is just a renamed R650 chip or a 65 nanometre R600 scheduled for Q3 2007.
We are trying to get more details about this 65 nanometre chip and we are aware that ATI also has the RV670 chip that is set to replace the X1950PRO line of the cards. A few sources already confirmed the existance of the RV670 chip but our original source couldn't.