Nvidia has released an updated version of its Game Ready drivers: version 361.43. These WHQL-certified drivers now support the GameWorks VR 1.1 SDK, which brings VR SLI support to OpenGL apps. The latest Oculus SDK is supported, too. Nvidia also added SLI profiles for a handful of games: 64-bit Elite: Dangerous, Hard West, Bless, and Dungeon Defenders 2.
As far as bug fixes go, the most notable is that graphics cards with GM200-series GPUs shouldn't run at elevated clock speeds when sitting on the desktop at 144 Hz refresh rates or higher. Last but not least, graphics cards with Fermi GPUs can now take advantage of Windows 10's WDDM 2.0 while operating in single-card mode. Check out the release notes for all the details.
GeForce Experience should take care of downloading the latest drivers for most, but if you prefer to update manually, here are direct download links for Windows 10 drivers and those for Windows 8.1 and earlier.