A few sources have confirmed that Nvidia is working on a new driver that might improve mining performance. This seems to be the hot topic in the last few weeks.
Game Ready driver for DiRT 4 and Nex Machina
Nvidia has released its latest Geforce 382.53 WHQL-certified Game Ready driver which brings "optimal experience" for upcoming DiRT 4 and Nex Machina games as well as adding a couple of new or updated SLI and 3D Vision profiles and fixes several bugs.
Support for DiRT 4 and Prey
AMD has released its newest Radeon Software Crimson ReLive Edition 17.6.1 beta driver which brings optimizations for DiRT 4 as well as performance improvements for Prey game and various bug fixes.
Performance improvements for Prey
AMD and its Radeon Technologies Group have released their latest Radeon Software Crimson ReLive Edition 17.5.1 driver, which brings performance improvements and optimizations for Bethesda's newest Prey game based on CryEngine.
One to have for new games
Nvidia has released its latest Geforce 382.05 WHQL Game Ready driver, which brings optimizations for a couple of new games, including Prey, as well as fixing some multi-GPU and general issues which have been seen in earlier driver releases.
With Dawn of War III optimizations and bug fixes
AMD has released its latest Radeon Software Crimson ReLive Edition 17.4.4 driver which brings optimizations for Warhammer 40,000: Dawn of War III as well as a couple of bug fixes.
Driver-level optimizations and some bug fixes
Nvidia has released its latest Geforce 381.89 Game Ready driver which should provide optimal gaming and VR experience for some new games and fix some bugs.
Official support for launched Radeon RX 500 series
AMD has released its latest Radeon Software Crimson ReLive Edition 17.4.3 driver which brings official support for the new Radeon RX 500 series graphics cards and few other minor updates.
Fixing issues with Windows 10 Creators Update
Nvidia has released its new Geforce 381.78 Hotfix driver which fixes black screen bugs on notebooks with Windows 10 Creators Update.
Support for Windows 10 Creators Update
AMD has released its latest Radeon Software Crimson ReLive 17.4.2 driver, which adds official support for Microsoft's latest Windows 10 Creators Update as well as fixing some bugs.