Basically, all ARM Windows machines will have an encrypted boot loader. The concessions you might have read about are for secure boot on other systems.
They also have been threatening Linux distributors with patent infringement lawsuits. Every ARM phone has a windows license paid for it, it's just not installed.
This is truly the sign of desperation and insanity. Once you get scared of the competition that much, you might as well show yourself to the door.
I want to make myself clear: Microsoft has done great things. But now; well now they are finally having to bleed. And we, the customers and competition, are going to see just how fearsome a desperate, dying cornered animal it truly is.
That patent library and legal team aren't going to go unused...