I don't think they did, Windows is still Windows. The silver bullet for SteamOS is gamescope. Maybe Microsoft will develop an equivalent, wouldn't hold my breath
yeah people are going to read that article and think they're getting some magical thing and it's like, if it was anywhere close to a thing you would have seen them hiring people from KDE, some kernel people, a bunch of internals people.
That's the nice thing about this Verge mention, the more attention we get, the more people like us will show up, which means we can fix more stuff. The virtuous circle.