I have a feeling Google, Apple, and Microsoft are leaving AMD64 in a concerted effort. All three dominate the K-12 sector.
Microsoft has already announced support for ARM with x64 emulation last month:
"We are excited about the momentum we are seeing from app partners embracing Windows 10 on ARM, taking advantage of the power and performance benefits of Qualcomm Snapdragon processors."[1]
[1] https://blogs.windows.com/windowsexperience/2020/09/30/now-m...