Hi everybody,
Since WoA comes up on shows time and time again with many open questions, I thought about publishing the few technical pointers I am aware of for learning more. Perhaps other people want to join in, who knows 
- There is no legal way for getting WoA to tinkerers and enthusiasts - because no end-user licenses are sold
- WoA (insider builds) run on ACPI compliant hardware (which is - sadly - lacking). A good example for the difficulties involved is the effort around developing a free UEFI implementation for the RaspberryPi (Guide – Windows 10 ARM64 on Pi 4B – Making Pi ServerReady)
- There is an ARM Developer Community Discord with a #windows-on-arm channel
(e.g. referenced here https://community.arm.com/developer/f/infrastructure-solutions/45965/is-there-documentation-somewhere-to-help-folks-develop-their-own-uefi-ebbr-sbbr-to-get-rid-of-u-boot/163869#163869) ← If @Leo wants to know more I highly recommend he heads over here for a chat