The NVIDIA 173.1439 binary driver was released today for users not supported by the mainline driver -- the GeForce 8 series and newer. This legacy driver update adds support for X.Org Server 1.15.
The NVIDIA installer was also updated against its mainline changes for handling of the libglamoregl.so X module that conflicts with the NVIDIA OpenGL driver. While it's not mentioned in the official release notes, the legacy driver was also likely updated for the latest Linux kernel compatibility support as well.
This updated legacy blob can be fetched over at NVIDIA.com.