The guys from nekowork, developers of the famous Neko Para visual novel, released a trial (only 2 dance motions) showcasing their new 3d mode and vr mode (based on Unity).
At the moment the only playable models are Coconut and Maple, hoping to see Vanilla soon.
In future we will have minigames in VR mode and maybe also some H-scene.
I have used Oculus 0.8 runtime (had problems with 1.3).
At the moment there is not HTC VIVE support yet.
The trial is free to download from their official site.