In the meantime, Amazon AWS principal engineer Alexander Grafmanaged to get the ARM version of Windows 10 running on Apple Silicon. He achieved this using the open-source QEMU virtualization software. In Geekbench, the virtualized Windows on Apple's M1 absolutely smokes a Surface Pro X running Windows 10 on ARM natively:
Windows on an M1 got a single-core score of 1,288 and multi-core score of 5,685 whereas the Surface Pro X's scores were roughly 800 and 3,000 in those respective benchmarks. Per MSpoweruser, the Surface Pro X benchmark was made using the SQ2 Arm-based chip that was co-developed by Qualcomm and Microsoft for Microsoft's latest Surface Pro X computers.