As I recall, Volta (3d memory) has been delayed multiple times due to supply and this is only a very limited release of their highest end hardware for deep learning all pegged for Q3/Q4 release. A field where they haven't really any competition.
Can't imagine we will be seeing any Volta GeForce cards released till next year.
Feels like they're feeling AMD breathing down their necks with their VEGA architecture, which should be very interesting.
AMD have also stepped up their game with ROCm which might take a chunk out of CUDA.