Valve Index is really a 1.5 gen, still a substantial improvement over the CV1. I have the CV1, and built a friends PC for his Valve Index and tried that one too.
The Index has even better comfort, i believe it's the top of the line. Over-ear headphones of baffling quality, excellent padding (with extra removable padding for different head shapres !), excellent balance...
The resolution is what would make it 2.0: it's still a very noticeable step up from the CV1, in clarity, FOV (which is plenty enough on the Index IMHO), and SDE. Still if you pay attention to the pixels you notice them, it's still not reality breaking as you know how the brain is tricked by VR.. Could be called 2.0 on that aspect, i think the "resolution barrier" is just barely passed here.
The controllers detect each finger very precisely.. they hold very well with a nice strap system, and have good ergonomics. Again top of the line here, but still it's not true inside-out tracking of your own hands, and the headset still needs tracking stations: that is still 1.5 overall IMHO.
Coming soon is the collab between HP and Valve (Reverb G2) for that 2Kx2K per eye headset, with the same mechanical system that is used for the Index, best of both worlds here, good inside out tracking, sub par controllers though. 2.0 ? almost. With inside-out tracking of your own hands (liberating them from the poor controllers) would make it completely 2.0.
It's available for pre-order in US, for us Europeans it will be july i think.