Good to know. Though it is still through an undocumented option and considered experimental.
My understanding from a talk at Ignite 2017 is that certain OS functionality (like some Windows Updates) use it, and that it would get more official support later...but nothing I can find yet, so as you say for the developer it's still an undocumented 'experimental' feature. Hopefully this has changed in the latest build, I will have to look more.