NVIDIA will sell entire finished GeForce FX boards to third party vendors? Possibly to ensure the quality of their products, yes.
"Nvidia is said to have decided to handle all the design and production of new GeForce FX (NV30) graphics cards to ensure product stability and quality. According to industry sources, Nvidia will only release the more simplified NV31 and NV34 chips to card makers for product design."
More here.