The NVIDIA 180.44 Linux driver officially adds support for several new graphics processors, fixes various OpenGL crashes (including the KDE 4.x Plasma problems), adds support for OpenGL 3.0 floating-point depth buffers, brings a number of VDPAU fixes, and also other changes that were introduced in the recent beta releases. The GPUs that are now officially supported by NVIDIA under Linux are the Quadro FX 380, Quadro FX 580, Quadro FX 1800, Quadro FX 3700M, Quadro FX 3800, and Quadro NVS 295. When it comes to consumer-grade ASICs, the GeForce GT 120 and GeForce G100 are now supported. To see all of the official changes in the 180.44 Linux driver release, look at their release notes.
There have been many NVIDIA driver releases for Linux this year already. Just since the 7th of March, this is the fifth main Linux driver release. On that date they released the 180.37 Linux driver with some VDPAU fixes and other work. A week later they introduced the 185.xx driver series. Ten days ago they released a new driver with various changes. Finally, last week was then the first OpenGL 3.1 driver. Today there is the 180.44 Linux driver release and perhaps this will be the last release for March. They have certainly been release happy lately, compared to the past (even just a year ago) where Linux users could go months without an update.
To download the latest NVIDIA driver for Linux, Solaris, and FreeBSD on x86 and x86_64 platforms, visit the NVIDIA Unix web-page.