According to IT之家, Blender 5.3 is released with native 3D Gaussian Splatting and Vulkan by default on Linux

According to IT之家, Blender 5.3 has been officially released with native 3D Gaussian Splatting support. On Linux, the default graphics backend has switched from OpenGL to Vulkan, and Windows follows the same change except on ARM devices. The update also adds the optional Blender Projects management system, improves Cycles with dispersion support and DLSS denoising, and redesigns the Video Sequencer with ripple editing. Installers are available for Linux, Windows and macOS.