I could use this for coding and my current 1920x1200 monitor for video and games... mmm.... so yummy. I already have a Dasung product, the not-eReader which doubles as a 7" eInk monitor and I love it. It's part of my tech EDC kit which I posted to https://imgur.com/a/xmRmYSn
To get back on topic, a 25.3" 3200 * 1800 eInk panel is mentioned at https://www.beck-elektronik.de/en/products/displays/e-paper-... and I doubt there is more than one but all details are "tbd".