I think your reply and Krejlooc's may have read more into the "generation" comment than intended. Yes, it will be an incremental step up, but both the Rift and Vive are going to be hitting 3 years old soon. There's been some mid-gen upgrades, like the slightly lighter Vive, the Pro with the 2.0 Lighthouses and depth camera, and the Rift Roomspace and Touch Controllers, but for such a rapidly-changing and improving technology, these products haven't seen a full update yet. I've heard hit-or-miss things about the Knuckles controllers, but I think it's silly I'm still waving around big ol' Vive Wands while Oculus users get their smaller, more flexible Touch controllers. (I know I can technically use them, not the point.) Video cards just launched with a new connection standard designed to make VR hook-up more simple, but nothing actually uses it yet. Eye-tracking is a Now thing, not a 5 years down the road thing (as you pointed out, you can buy a Vive insert right now in China), and is both more immersive in single and multiplayer, and is the key to lowering hardware demands with foveated rendering on higher density panels. The normal Vive still ships with the 1.0 Lighthouses and no Deluxe Audio Strap standard, I just checked the site and some retailers. Both headsets could learn some comfort lessons from the PSVR, which lets you easily flip up the visor without any after-market 3rd party straps. And again, Valve's got something cooking, as Krejlooc probably knows. It's likely whatever they plan to do is coming timed with a BIG burst of content.
It's smaller stuff, but it does all add up. And sure, it's more akin to a video card upgrade, but those can be nice too. Especially if it's been a while since the last one.
