I have a great concept for a novel I might write at some point after the novel I’m writing now is completed and (hopefully) published that deals extensively with VR & AR. It’s interesting that even though I know AR & VR are hurtling towards us rapidly, with the current novel I’m writing I just don’t feel very comfortable talking about that.
You generally want a novel to be as timeless as possible, and so it doesn’t make much sense — unless the novel is set in the far, far future — to use some fantastical possible technological advancement as a plot device. But maybe I might eventually. Generally, however, the more conservative you are in a novel when it comes to technology, the better.
I remember when the Internet was exploding in popularity 20 years ago looking at novels that didn’t even mention its existence and growing frustrated. I think a lot of that had to do with the lag time between conception and publishing of a novel as much as anything else.