This is a beta driver release from the Release 265 family of drivers (versions 265.xx to 269.xx). You can read more about this family of drivers on GeForce.com.
This driver package supports GeForce 6, 7, 8, 9, 100, 200, 300, 400, and 500-series desktop GPUs as well as ION desktop GPUs.
New in Release 267.24
We have a discussion thread open on these drivers right here.