The current mainline NVIDIA binary Linux driver supports from the GeForce 8 series and beyond while their newest (of several supported) legacy drivers covers the GeForce 6 and 7 series hardware. The GeForce 6 (NV40) series graphics cards were introduced in 2004, but NVIDIA is still updating their binary Linux blob for the hardware and the GeForce 7 (G70) GPUs. These new legacy driver updates are mostly about maintenance, but still can be important with the Nouveau open-source driver support being hit-or-miss at times.
With yesterday's NVIDIA 304.116 Legacy update, there's support for modern Linux kernel releases, an updated NVIDIA installer to detect collision with the EGL GLAMOR library, and updates for the NVIDIA OpenGL driver temporary file handling. Beyond the Linux x86 and x86_64 driver updates, the FreeBSD and Solaris NVIDIA drivers have also been released as version 304.116.
The updated NVIDIA Linux/Solaris/BSD driver with these minor improvements can be found at NVIDIA.com.