Two months after giving developers a sneak preview of its OpenCL development toolkit, Nvidia claims to have released the "world's first OpenCL 1.0 conformant drivers for Windows XP and Linux."
This "conformant" driver isn't downloadable by just anyone, mind you. Interested parties must first sign up as part of Nvidia's GPU Computing registered developers program. Still, the driver itself purportedly supports all CUDA-enabled graphics processors, which should cover pretty much all GeForce 8 and later offerings (not to mention more esoteric products like the Tesla series).
Aside from graphics drivers for 32-bit and 64-bit flavors of Windows XP and Linux, Nvidia's driver pack includes:
Updates to the OpenCL SDK code samples A new SDK "oclsobelFilter" sample OpenCL compiler and driver binaries OpenCL for compute-capable GPUs documentation
Nvidia boasts that it was the "first to submit its OpenCL 1.0 drivers to the Khronos OpenCL Working Group for certification in May 2009." AMD may not be too far behind, though—last we heard, it was also planning beta OpenCL support for the first half of this year.