I have to say that I'm slightly disapointed in the performance of my 970 in the context of new releases like DA or AC:Unity (ok, it's Ubi...) or Evil Wtihin...don't get me wrong, the card itself is great, cool and silent and quite strong and runs almost on 980 level but it seems like it won't be enough for nextgen ports at 60FPS. And that's what I bought it for. Lastgen Games ran at 60FPS on my 660TI already....
There is no GPU on the market which will give you max settings at 60fps in future releases. You will obviously need to tone down a few stuff to hit your target.
If you're gaming at 1440p you will have even more sacrifices to make.
I'm fine with 1080p for the moment as I don't feel confident any GPU can truly do the job at 1440p. I'm talking about near or max settings (except AA) and 60fps.
My 780 is unfit for max settings + 60fps in the latest games but I knew that long before I bought it.
If you ask me you should not feel robbed that your 970 will struggle to keep 60fps in the most demanding games, remember that PC games (even multiplats) will necessarily scale above what you have and that's a good thing.