> I like this announcement, because it means that there's a manufacturing line for proper HiDPI [1] displays running in some LG factory somewhere that third party manufactures like LG/Dell/Iiyama can hopefully use to give us some fresh good-looking 27" 5K desktop monitors.

LG, Dell, and Iiyama all made such monitors; the only survivor is the LG one. They didn't sell well, apparently.