The 16K display is clearly not meant for consumers, as it measures 63 feet x 17 feet. It integrates Sony's latest MicroLEDs with Crystal LED technology, which are said to offer increased brightness over the existing OLEDs. Sony also managed to raise the pixel density over 55 ppi in order to offer increased immersion when viewers sit at least 10 feet away from the screen.
https://www.notebookcheck.net/Sony-ups-the-ante-with-16K-MicroLED-display.416198.0.html
Definitely getting one of these in projection size someday. ~3x1.5m sounds good.