LG Display (the panel manufacturer, not the tv manufacturer) said in Jan that they are planning to start producing 42 inch OLED panel from H2 this year. Not sure who is going to make a TV out of it yet.
Apparently, it was shown in Vietnam today so there is hardly any English news at the moment
https://videocardz.com/newz/gigabyte-showcases-aorus-fv43u-4k-43-inch-144hz-gaming-monitor
https://hunchmag.com/gigabyte-aorus-fv43u-monitor-is-based-on-43-inch-4k-panel/
43 inches 4k 144hz 10bit...