won't be surprised, new one every year.
I think for VR to become mainstream, it'll have to be fully embeded in your regular glasses in terms of size, which is gonna take a very long time. They showed a prototype last year, but probably will still be minimum 3 years ish till consumer version comes out.if there's a new one every year then hopefully it's like phones where having the newest version is nice but the older versions are still totally useable for most things