My GTX 980 is now obsolete? Guess I will wait for the next, next gen video card.
If you wait , you will be paying the same and losing better cards . The best strategy is to sell old for 30% loss and buy new for every generation . you will end up paying the same and enjoying every generation.
Whatever GPU is for whatever resolution whoever buys it wants to run it at and get results he is mostly happy with. By toning details down a bit, you can push much higher resolutions out of a much weaker GPU. In many games, I find myself disabling some of the fancier GPU-hogging effects simply because I find them too distracting, they look incorrect or have glitches that bother me.
If I had a 1060 and a 4k display, I would likely find a balance of settings in most games that I'd call good enough to play at 4k. (Just for giggles, I have run games at 5760x1080 on my 1GB HD5770 and many of them were surprisingly playable without giving up too much on details beyond what I had already cut off at 1920x1200p.)