No, I don't think it will. I hate this trend of pretending that our relative freedom on PCs has anything to do with the platform. Our freedom on UEFI Secure Boot PCs was hard fought and could be taken away at Microsoft's whim*. They literally hold the keys.
Remember the drama about whether Linux would be allowed to run under Secure Boot at all? That was last decade's reminder about hardware freedom and it had nothing to do with a new ISA. Thankfully Microsoft graciously decided that all Windows 8 logo hardware should allow users to load their own keys, but there's nothing intrinsic about the PC platform that forced them to make that decision, and nothing forcing them to keep it.
To be honest I don't know if it came to pass or not. I'm still trying to find more info on what the current Windows logo requirements for Secure Boot on x86 actually are.
Remember the drama about whether Linux would be allowed to run under Secure Boot at all? That was last decade's reminder about hardware freedom and it had nothing to do with a new ISA. Thankfully Microsoft graciously decided that all Windows 8 logo hardware should allow users to load their own keys, but there's nothing intrinsic about the PC platform that forced them to make that decision, and nothing forcing them to keep it.
* This Ars article seems to say it's already been taken away. I'm trying to confirm Microsoft's current UEFI requirements in their docs, but I can't find them. https://arstechnica.com/information-technology/2015/03/windo...