According to reports, Samsung is developing 49-inch and 77-inch QD-OLED panels. Currently only available at 55-inch and 65-inches, these 49-inch and 77-inch QD-OLED panels could make their way to Samsung-branded TVs within a year's time as the company attempts to best LG's excellent OLED TV range.
https://www.notebookcheck.net/Samsung-QD-OLED-Smart-TVs-to-launch-next-year-in-49-inch-and-77-inch-screen-sizes.616253.0.html