Admittedly the vast majority argue the lack of UHD content as the reason to hold off investing in UHD hardware. The much more legitimate reason to hold off is that we are just now transitioning to "full spec" (Rec. 2020) UHD. We will see a rush of Rec. 2020 compliant gear in 2015.
With OLED following a similar timeline, you might be able to see my plan for a new display.
http://en.m.wikipedia.org/wiki/Rec._2020" rel="" target="_blank">http://<a href="http://en.m.wikipedi.../Rec._2020</a>