Andrew Humber, NVIDIA's senior PR manager for their Tesla and CUDA products, has passed along word that they have submitted OpenCL 1.0 supportive drivers to the Khronos Group for conformance certification. This initial OpenCL support will be on Linux and Windows, though there was no mention of OpenCL on Solaris/OpenSolaris or FreeBSD where they also maintain proprietary drivers.
There are currently OpenCL-capable drivers in the hands of registered developers through NVIDIA's CPU Computing program, but it is expected that once this conformance certification goes through they will make an official driver release. Perhaps it will mark the NVIDIA 190.xx driver series?
There will be Open Computing Language support via NVIDIA's new drivers for any consumer or workstation hardware that currently supports their CUDA technology. More information on NVIDIA's OpenCL implementation can be found on their OpenCL web-page