UE4 Roadmap

Hello,

Is there an update for Mixed Reality Support? The Spectator Screen looks like a promising first step towards great MR using Unreal Engine! I’m hoping to control the spectator screen’s viewpoint by having it assigned to a Vive Tracker/Controller that is connected to a camera in real life. It looks like that support is described on the “upcoming” builds but any info as to when it’s coming? 4.18 or more like 4.52? Thanks!