Like others have mentioned, do not expect this to make any difference at all.
For starters, the general public will have pretty much zero chance of buying one of these. They have very limited stocks and they will all be bought up by large mining farms. This will leave everyone else still sat in queues for graphics cards.
With regards to hoping nVidia will release a dedicated mining card, once again this will make no difference. Ethereum will be moving to proof of stake at some point in the not too distant future, at this point mining won't be possible for this coin. So as a miner, do I go out and buy 7 cards that can only be used for mining and are likely to be useless in 12 months. Or do I buy 7 GFX cards which cost less (Yes their previous attempt at a mining card cost more than a GPU) and have the benefit that when I have finished mining, the cards will still be useful for building gaming PC's.
Also as others have pointed out the performance of these things is not actually that great. When ASICs came to bitcoin, they took off because they could destroy the performance of any GPU based rig. These things however are in the same ballpark as a GPU rig so the difficulty of the network will not change very much and mining will remain profitable. My 7 GPU RX570 rig mines at 195MH/s.
There is also the issue that Ethereum was designed to be ASIC proof. This means that they can change the algorithm on the fly which in theory would render any ASIC useless. From what I have read nobody knows if they have built in a kind of flashable firmware to these ASICs so they can be updated at a later date. But even if this is the case it will certainly make like difficult for them which will make people carry on using GPU's anyway because they will be less hassle. Imaging having a farm of 5000 of these things and having to go around re-flashing firmware to all of them everytime they change the network algorithm.