32inches

Samsung has announced the 32-inch M8 Smart Monitor which features 4K resolution, support for a billion colors, 99% coverage of sRGB, and looks very similar to the Apple Studio Display. It is also a smart TV.

LG has announced that it is updating its color-accurate UltraFine OLED Pro monitor line with a few new features and is also adding a new 27-inch size option to accompany the previous 32-inch version.