Mesa 25.0 just released with Vulkan 1.4 support in six drivers. Did you read that? SIX drivers! Of those, four have 1.4 conformance listed on the Khronos website.
https://lists.freedesktop.org/archives/mesa-dev/2025-February/226464.html
How many conformant closed-source Vulkan 1.4 implementations are actually shipping? Maybe three. Yeah, over half the shipping Vulkan 1.4 implementations are in Mesa.
@gfxstrand mesa is super awesome, thank you for your work on it! one of my fav hobbies is to catch up on panfrost/panvk and etnaviv MRs :D