The Guru of 3D checked out the Asus ROG Swift PG42UQ 138Hz OLED Monitor
A quote from the article:
In this review, we will be putting the ASUS Rog Swift PG42UQ through its paces. The big one with an OLED panel. The panel itself is said to boast 99% DCI-P3 coverage, 4K resolution, and true 10-bit color; that's the one that you want, right? It's yours at an asking price of 1.299 USD/EUR.Asus ROG Swift PG42UQ 138Hz OLED Monitor Review