All I can see from LG is that they're working on a 5-inch retina display (1080p). The retina display in this year's Macbook Pro is 2880x1800, and it's 15-inches in size. I can't see them bringing PPI that dense to desktop size displays any time soon, certainly not in TV sizes. A 23-inch monitor would need a nearly 4K resolution to qualify as "retina", and your computer wouldn't be able to make use of it in anything other than games, which would then run at the pace of continental drift unless we see a MASSIVE increase in GPU power in that time.
So buy away, you're at LEAST two years away from anything of the sort. By then, we will hopefully start to see OLED in the higher-but-affordable range too, which is what I'm more anxious to see.
