So, to amend my own post - some new smartphone (I think iPhone, but who cares by this point) that will be announced in two weeks time will have a UHD resolution on an approximately 5" screen for 778 Pixels per Inch.The innate 8K will probably be for the special events only. (OK, Apple is allegedly getting ready to release a 27" 8K monitor for one of its flagship pro systems ... at about 330 PPI, it'd still be lower than the 557 PPI screen from a new Samsung smart phone ... with no 8K sources, this will need a massive upscale, which is what likely to happen with the consumer grade TV's, as they ramp up their pixel count also)...
Ah, ya, 8K can't get here fast enough.
PS. 778 PPI on a 55" 16x9 screen will have ~ 850,000,000 pixels, more than 32K.