The card notwithstanding (heck even onboard video supports 2560X1440p; it all depends with what settings your comfortable with, don't expect to game with a 760@1440 on high/ultra settings), I think 1440p will become the new consumer standard, although it will be some time before content becomes widely available. PC and enthusiasts standards evolve very quickly and we can't really say right now if 4K is an upcoming trend, fad, or soon to be standard. Regardless, I do not anyone who has a 4K monitor without running top-end GPU's in SLI/Xfire
That being said, you can't really talk about your monitor without discussing the video card, because they both directly impact the other. I myself game, at 1080 and my next upgrade will be the Asus swift and a maxwell based card. The swift has the features I want, large panel, G-sync, high refresh-rate and 1440, however, I will be waiting until the price drops significantly. Finally, I think it is really all a matter of preference/taste I have some friends that game at 720 on medium settings and their happy as can be.
Here is an intesting article speculating on the future of PC gaming http://www.pcgamer.com/2014/03/13/the-future-of-pc-gaming-gpus-and-4k-monitors/
Edit: in the review you cited the 770 can only hit 30 to 50fps at 1440 for current AAA games tested. For some anything people 60fps is unacceptable
Edit: just realize you have a 760 not a 770, as you can imagine you will see even lower fps with a 760