According to reports from Korea, LG Display requested Samsung Electronics to use its WOLED panels on the same tier as SDC's QD-OLED panels, and Samsung will use both panel technologies in its S90D OLED TV series. Samsung will likely not disclose the actual panel technology to the consumer, and will likely decide on the panel technology per region.
The Samsung S90D will offer 42-, 48-, 55-, 65-, 77- and 83-inch panels. SDC only makes 55, 65, and 77-inch QD-OLED panels, and so in these sizes both QD-OLEDs and WOLEDs will be used. For the 42-, 48- and 83- models Samsung will only use WOLEDs.
Samsung Electronics did decide to use only QD-OLEDs in its flagship TV range, the S95D, while it will use WOLEDs for its entry level OLED (the S85D series).
Last year Samsung claimed that QD-OLEDs provide a superior image quality, but this will be difficult to maintain this year as the company is relying more on LGD's rival WOLED panels.