I think this is a one off Volta gaming card and we won't see any more. I think NVidias next round of gaming cards will be on a different architecture all together.
Performance wise the Titan V is no better than the Pascal cards, it is just a lot bigger which gives the extra grunt. The other important difference is the DX12 support is very good, unfortunately there are not enough games that can use it.
There are several clues that this is a one off -
1. it have no SLI fingers just disabled NVLink, a new family of gaming cards would have addressed this but it is not worth it for a one off.
2. The card is listed in the driver downloads as a 10 series card, not on its own as the first of a new family of cards.
3. The styling of the card is very 10 series FE, nothing new just gold in colour.
4. They have just launched the 1070 Ti, if there were new gaming cards around the corner this would make the new Pascal card pointless.
I think NVidia will be selling Pascal like the new 1070 Ti for quite some time yet.