I doesnt matter if the new amigas wont initially be able to use the new processor. One of the things to expect is that the current top-of-the-line cpu drops in price and becomes more abundant, and with those dual-cpu amigas around the corner it wouldnt be the worst case scenario.
On a side note: Is anyone else but me waiting for BBRV announcing that the pegasos II will be able to use this cpu along with G6 and G7 in a triple-cpu pegasos ;-)