Is SceneLoader dead?

Is the SceneLoader API and related 3D XAML work for UWP dead? Will there be an alternative? If not, why is this not being developed further? We have Win2D and no equivalent for a UWP 3D API. UWP needs a cross device 3D API that works on desktop/tablet/XBOX and HoloLens.

Lastly, it's time Microsoft stop announcing initiatives that have no future. Please keep work that has no clear roadmap or commitment as internal only. Public facing commitments need to be followed through irrespective of how hard they might be to actually complete. Like this one.