MobileFSR Explained?

Hello everyone, With the release of 5.1 there is a new plugin called MobileFSR. There zero explaintion on it, there is zero docs. there is zero settings for it. it is just a name plugin with no affect or actual job? then why they released it. waste of time.

or if there is docs/option/blog/video or someone can explain to me, please post it here!