I believe this was the first even unveiling of Windows 10 on Arm in December 2016; note the processor speed - Snapdragon 820 with 1.59 GHz - not too far behind the Raspberry Pi albeit with a significant difference in RAM.
Very interesting. The RAM makes a huge difference, but that speed (albeit a small factor) is pretty cool. I think we’re well on our way to having a decent, cost-effective device here!
I found out that there was a Windows 7 on ARM that was previewed at an early Windows 8 event - but never released. If you search for the Windows 8/apps announcements on YouTube then you will find it.
These are all the Snapdragon devices that appear to run Windows 10 on ARM:
Note: the earlier models cannot boot from ISO - but the Snapdragon 850 ones have improved firmware.
But there are also some obscure Snapdragon Laptops available exclusively in China, such as Weibu:
https://notebookitalia.it/connected-pc-low-cost-snapdragon-850-windows-on-arm-28940
I think we are also close to having WOA running on Android phones (besides other SBCs) since there exists in pretty much all 64-bit Snapdragon phones a “hidden” UEFI bootloader since Snapdragon 820 (announced March 2015) that is just waiting to be harnessed by the right developers: