I doubt they're going to release 1440p or 1600p monitors at any size bigger than what they are now, considering those resolutions have been around for a while and it's not like there'd be any reason to start now (especially with 4K becoming a thing).
You're probably right. But then I'll just get a 4k TV in a couple of years time, when HDMI 2.0 is standardized and properly supported by all models, and use that as the display
I hate to break it to you, but your monster rig won't be useful for 4K either. TBH, building a computer with the intention of it lasting 7-8 years is a rather poor idea to begin with. It's not like people with 7900 GTXs are content nowadays.
http://i.imgur.com/ULj4q.jpg Let strength be granted, so the world might be mended.