I just found out today, but Steam released this on my birthday! (I swear the world revolves around me this year, First Halo 3, then i get my eyetracking and now this)
On a serious note how the hell did they go this long without this feature, I cant tell you how annoying it was not being able to do such a simple thing that all of the oculus headaets could do from day one.
Now if they could juat fix that jank where you get kicked back to the steam VR grid whenever the game loads.