WebVR (https://webvr.info/)is something that is going to change the web experience like never before. Frameworks like React VR (https://facebook.github.io/react-vr/) and A-Frame (https://aframe.io/)have started to showcase its magic now itself. Browser compatibility is going to be a key item in this case
I feel AR and MR going to be a hit immediately, definitely in 2017 and VR may take its own sweet time to conquer the world. By that time the devices will be more matured and will not give you an the alien look.