Nvidia did not release any specific details regarding the new Geforce 364.96 Hotfix drivers, other than these support all Nvidia graphics cards since Geforce 400 series and are available for Windows 7, Windows 8 and Windows 10 OS in both 32-bit and 64-bit versions.
According to details on Geforce.com site, the new Geforce 364.96 Hotfix drivers are solely released for the Bethesda's Doom Open Beta phase which starts today, April 15th and end on April 17th. The same site also says that these will bring all the necessary optimizations as well as SLI support for Doom Open Beta.
The support site, where you can also download the new drivers, shows a single known issue, which gives out an error if the Geforce Experience is launched without a network connection.
You can find and download the new Geforce 364.96 Hotfix drivers over at Nvidia's dedicated support page.