AU Optronics announced that it will demonstrate a 12.1" LTPS micro-LED display prototype next week that features a resolution of 1920x720 (169 PPI). It seems that this is the same display shown at IFA 2018.
The 2018 display used blue LEDs with color conversion, which achieved "marvelous color performance", according to AUO.
AUO seems to lead a very impressive Micro-LED development effort, but in July 2018 the company says that micro-LEDs are still too expensive and not ready for mass production yet - even after years of R&D. AUO does plan to introduce micro-LEDs in "niche products" in the future.
In addition to this micro-LED display, AUO will also demonstrate new OLED display prototype (including its first ink-jet printed display and a foldable OLED panel) and mini-LED displays.