The less-interesting 270.41.19 pre-release fixes a bug in the VDPAU presentation queue that could cause temporary hangs, a bug when capturing SDI video, a case where the OpenGL driver could leak resources, a Linux kernel interface compatibility problem, and two SLI initialization bugs. This stable pre-release can be downloaded via their FTP server.
The more interesting release pushed out yesterday afternoon is the NVIDIA 275.09 beta driver for Linux. This first 275.xx series Linux driver adds support for hardware button based pairing to NVIDIA 3D Vision Pro, unofficial GLX protocol support for the GL_NV_framebuffer_multisample_coverage and GL_NV_texture_barrier extensions, official GLX support for GL_NV_register_combiners2, improved performance in certain memory allocations, and a BaseMosaic X configuration option that can be used to extend a single X screen transparently across all of the available display outputs for each GPU.
The 275.09 release for Linux x86 and Linux x86_64 also carries a few extra bug-fixes, including for issues with the Lenovo ThinkPad W701, menu corruption in OpenOffice.org on screen rotation, disappearing Java 2D widgets when rendering using OpenGL FBOs, and a bug that would cause nvidia-settings to crash on some Linux distributions.
The 275.09 beta driver for NVIDIA GeForce/Quadro hardware can be downloaded in x86 and x86_64 flavors.