Haven't seen a mention of webVR (which google is pushing heavily) and more specifically a-frame by Mozilla which makes threeJS far more palatable to newbies, novices and apprentices.
VR and AR are huge growth-points in the world of tech, and - as the google speakers in the webVR link above demonstrate - the Web is a major part of the strategy of major VR players like Google.
It represents a whole new direction for the web with lots of space for innovation. Eg What's the best way for a user to be able to navigate in 3D space? etc.
The trend might be early, but it's definitely UP :]
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