The latest Vulkan 1.2 specification can be found here: Vulkan Beta Driver DownloadsWindows driver version 472.55 and Linux driver version 470.62.07 contain newly released Vulkan features and bug fixes for Vulkan developers. Vulkan 1.2, including support for the Vulkan Ray Tracing extensions, is available for Windows and Linux in our general release drivers here: Vulkan 1.2 General Release Driver Downloads
This page provides links to both Vulkan 1.2 general release drivers, and developer beta drivers.