It's been, what, 17+ years since I bought my Virtual I/O iGlasses? Amazing how long it takes some technologies to catch on, if ever. The RIFT is certainly an improvement (1280×800 vs 640x480); we'll see if the "visual acuity" twist and improved tracking gives VR the push it needs. Hopefully Carmack (and if anyone can, it's him) can solve whatever the limiting nuance is.
Then again, the Newton came out around the same time, and took just as long to be reborn in a viable "killer app" form (iPad). Between Carmack, RIFT, and Google Glass - with "smartphone" power making the needed CPU cycles portable - maybe we'll finally see VR happen.
ETA: "wireless" is very important. Even if the host CPU is just a few feet away, either it must be wireless or on the user. Getting tangled in wiring is really annoying. Trust me.
Then again, the Newton came out around the same time, and took just as long to be reborn in a viable "killer app" form (iPad). Between Carmack, RIFT, and Google Glass - with "smartphone" power making the needed CPU cycles portable - maybe we'll finally see VR happen.