The Khronos OpenXR Working Group today released a new set of extensions introducing "spatial containers" to OpenXR. These extensions establish an open, cross-platform API for spatial windowing systems. Spatial containers provide system-managed spaces where applications can display extended reality (XR) content, "similar to how traditional applications draw 2D content within windows on a desktop." This gives developers a standardized way to create applications that can move between immersive experiences and multitasking with the real world or other apps across compatible XR platforms.