NVIDIA has uploaded the GeForce 355.69 WHQL driver, you can find this release over here. The driver can only be found by selecting the new "GeForce GTX 950" in the video card list, it seems that if you have another video card there's no point in updating as there's nothing new.
This driver is aligned with the launch of our newest GPU, the GeForce GTX 950. This new GPU has been designed to deliver the best performance in its class and incorporates the same advanced technologies found in our latest Maxwell architecture.
New GeForce GPU
Supports the new GeForce GTX 950 GPU, based upon the second-generation Maxwell architecture