Fedora 25 Won't Ship With Mesa 13 Or Vulkan Drivers
While Fedora 25 is shaping up to be an excellent release, there are two separate but related disappointments: it won't be shipping this month with Mesa 13.0 drivers and also it's not enabling any Vulkan support out-of-the-box.
While the Vulkan loader landed in Fedora a while back, the Mesa builds in Fedora are still shipping without the Vulkan support enabled. Mesa 12 is currently used by Fedora 25 and with that release is the Intel ANV Vulkan driver but is disabled at build-time by the packages. Then again, Ubuntu 16.10 doesn't ship Vulkan by default either.
Mesa 13.0 was officially released yesterday with big improvements for OpenGL and Vulkan, including the RADV Radeon Vulkan driver. Sadly, Fedora 25 isn't going to be shipping out-of-the-box with Mesa 13.0.
Confirmation was posted to this Fedora devel thread. It's likely we will see Mesa 13.0 support ship later on as a F25 stable release update, but that could still take some time. But at least there should be some Copr repository options for those wanting bleeding-edge Mesa with Vulkan on Fedora right now.