According to the release notes, the new Geforce 381.89 Game Ready driver provides driver-level optimizations for Quake Champions Closed Beta, Warhammer 40,000: Dawn of War III and Heroes of the Storm 2.0 games. It also brings VR optimizations for Batman: Arkham VR, Rick and Morty: Virtual Rick-ality, and Wilson's Heart games.
The Geforce 381.89 WHQL Game Ready driver also fixes some problems, including game crashes in Sniper Elite 3, blue-screen bug with eDP panel on notebooks as well as Geforce GTX 1060 and increases GPU idling voltage.
As always, the Geforce 381.89 WHQL Game Ready driver includes all features, performance improvements and bug fixes brought by the earlier Geforce 381 series drivers and is available for Windows 10, Windows 8.1 and Windows 7 in both 32-bit and 64-bit versions.
You can download the new Geforce 381.89 WHQL Game Ready driver via Nvidia driver support page or automatically via Geforce Experience software.