DX12 isn't Fury's savior. Neither is it for the rest of AMD's lineup. DX11 is nV's trophy, because of different reasons (better threaded / less overhead drivers, gameworks, etc)
For those of us who don't upgrade hardware as often and are using AMD's, there seems to be much to gain from the DX12 transition, from the hardware itself (GCN's particular features discussed here and on other threads) to the software (DX12 = bye bye AMD's poorly threaded/high overhead DX11 driver -vs nV's- going forward). That was my point a few pages back. Of course if you're in the market for a card right now, you'll choose what performs best for your intended usage, and the better all round card right now seems to be the 980Ti, on lower resolutions. Higher resolutions is another story. But the vast majority of us is on 1080p-1440p, and there the 980Ti is king.
In the future? I don't know. Fury is bound to get some polishing driver side, as did the 7970 and 290x back in their time. As stated in a few posts above, DX12 adoption will be much faster than any other DX version before, but will not happen overnight. Nor will DX12 games be released overnight.
There's a long way to that future. DX12 affords AMD's graphics side a new start, if you'd like. Let's hope for their sake and ours that they make a good use of the opportunity and provide better competition going forward (not that Fury isn't competitive with the 980Ti, not as much as was expected going by the paper specs, but shows up to the fight and usually ties it and sometimes wins, given the necessary conditions). If it gets a price cut, then it suddenly becomes *much* more attractive... and we still have to see the rest of the Fiji lineup. AMD executed much better than last time with the 290/x in this regard, no noisy blower of hell and a poor performing product, because of that. They are learning... slowly, but learning and getting better at it. Still, there's some stuff, basic stuff they need to take care of, like not saying your product is an overclocking monster if you don't have the necessary tools at launch, for example.
Time will tell.