Mesa 25.2 is an especially exciting quarterly feature release given the many great changes included -- especially for the Radeon RADV and RadeonSI drivers, the Intel ANV and Iris drivers, and the NVIDIA NVK driver.
Mesa 25.2 on the AMD side includes RDNA3 and RDNA4 ray-tracing performance optimizations, various new Vulkan API extensions, FSR 4 improvements, Vulkan Video support for RDNA 4 GPUs, and a variety of other performance optimizations and tuning thanks especially to Valve / Red Hat / AMD.
On the Intel side the Xe3 Panther Lake graphics are now considered stable, Vulkan Video improvements are present, Shared Virtual Memory support for the Iris Gallium3D driver, and a variety of other improvements especially for Xe2 and Xe3 graphics hardware.
With the NVK driver for open-source NVIDIA Vulkan support there is Vulkan 1.2 conformance for Kepler GPUs, initial NVIDIA Blackwell support, various NAK compiler optimizations, Vulkan 1.4 conformance for Maxwell GPUs, and a variety of other improvements.
Plus various other new OpenGL and Vulkan extensions wired up to different drivers, Vulkan 1.4 for the PanVK driver, removing of X11 DRI2 support, dropping pre-DMA-BUF wl_drm Wayland support, OpenCL 2.0 coarse grain buffer SVM support for Rusticl, and plenty of other changes along with retiring of the old Clover driver.
The brief Mesa 25.2-rc1 release announcement can be read on the Mesa mailing list .