From Cebit, some GTX4xx action:
http://www.pcgameshardware.com/aid,7...at-Cebit/News/

"A little surprise was the product sticker, which mentioned a GF-100-375-A3"

"We have also learned that the smaller version of the Geforce GTX 4xx is supposed to cost about 300 to 400 Euros and the top model about 500 to 600 Euros."

And, GTX4xx reference design: