After being released on Github, XeSS is now an option in Shadow of the Tomb Raider, as evidenced by yesterday's patch's appearance in Steam's release notes.
Intel XeSS supports not only Arc GPUs, but also AMD Radeon and NVIDIA GeForce GPUs. The technology has already been confirmed to work and tested by CapFrameX with Radeon RX 6800XT GPU in SoTR. Intel XeSS supports AMD Radeon and NVIDIA GeForce GPUs in addition to Arc GPUs. Intel published XeSS 1.0 on GitHub, making it the platform's second temporal upscaling capability (alongside AMD FSR 2.0).
Another title is Death Stranding, The producers of Death Stranding Director's Cut have announced the availability of Intel XeSS temporal upscaling technology. The patch has already been issued, and XeSS should now be compatible with Intel Arc GPUs and other vendors' solutions.
Intel launches XeSS upscaling technology, available in Shadow of the Tomb Raider and Death Stranding