The Khronos OpenXR working group has expanded its Extension Matrix to include self-reported support data from various middleware providers. This update, announced today, integrates information from Godot, LÖVR, StereoKit, Unity, and Unreal Engine. Developers can now consult the OpenXR Extension Matrix to see specific extension availability and support across the full XR stack, aiming to streamline development by providing clearer insights into middleware compatibility.