Beyond3D reports NVIDIA told at a recent conference call they have two 90nm products in production right now. However, it is not sure which chips NVIDIA was talking about. It could be that one of the two was the RSX chip for Sony's PlayStation 3, which will be 90nm.
The question is exactly how "in production" are these chips and when are they likely to ship? Although its not a definitive, the PCI-SIG PCI Express integrators list has often given some leads as to pre-production chips, and whilst ATI’s low and mid range chips, which ATI are now stating will be available in October / September, have appeared on the list, but no newer desktop chips than G70 appear on the list from NVIDIA. Of course, NVIDIA have other projects that are not directly desktop graphics processors.
It's also likely to assume NVIDIA's upcoming G7x chips will be 90nm, while the GeForce 7800 GTX was still 110nm.