In February 2019 Samsung Display started to mass produce its new 15.6" 3840x2160 OLED display panels, and finally we have the first laptop to ship with such a panel - Dell is now offering its 2019 Alienware m15 laptop. The 15.6" OLED display is a $350 extra compared to the regular 15.6" FHD LCD (according to Digitimes, the price gap between these two displays should have been closer to $60).
SDC is targeting premium laptops, as these ultra high resolution panels are optimized for gaming, graphic design and video streaming. At CES we saw three companies that announced 15" OLED laptops - HP with its Spectre x360, Lenovo with the Yoga C730 and Dell with the XPS 15, Dell G7 15 and the Alienware m15 which is indeed now shipping.
Samsung says that the new AMOLED panels, in addition to the very high resolution, feature high contrast ratio, extreme color accuracy, full HDR compatibility, a very wide color gamut, and remarkable outdoor visibility. The brightness level ranges from 0.0005 to 600 nits. Coupled with the high contrast (120,000:1), this maximizes the HDR benefits.
Samsung also says that the displays support the entire DCI-P3 color gamut - while emitting "significantly less blue wavelengths" compared to LCDs. Blue light emission can potentially be harmful to the eye.