In a surprising move, Dell demonstrated a prototype of his Alienware 55 OLED Player Player at CES. The 55-inch OLED display has an adaptive refresh rate of 120 Hz and due to the high contrasts of the OLED technology, the display promises to be one of the most impressive screens released this year. Meanwhile, it is still in development and the price is likely to be far beyond most players.
The Alienware 55 display is based on an Ultra-HD (3840 × 2160) OLED panel that boasts vivid colors, deep inky black, an extremely high contrast ratio (~ 100,000: 1), fast response time (~ 0, 1 ms), wide horizontal viewing angles and up to 120 Hz adaptive refresh rate (which is what sets the monitor from OLED UHDTVs). The display can reproduce up to 95% of the DCI-P3 color space, which is oddly low for an OLED display, but can be explained because the unit is still in development.
(Photo from Engadget)
] In fact, while Dell says the Alienware 55 screen is set to support an adaptive update rate technology, the manufacturer does not describe if it will eventually support AMD's FreeSync / FreeSync 2 or NVIDIA's G-Sync / G-Sync HDR when completed. With regard to the connectivity features, the DisplayPort 1.4 and HDMI 2.1 display (with the latter possibly not only pointing to a new cable advance, but also for variable refresh rate (VRR) and other support for HDMI 2.1 features.  It is noteworthy that to make the Alienware 55 design attractive to players (if a 4K 120 Hz OLED panel is not enough), the monitor has programmable RGB backlighting.
Dell is currently expecting the sale of its Alienware 55 gaming OLED monitor sometimes during the second half. The pricing of the device is currently unknown, but one can guess that since it uses a 55-inch Ultra-HD OLED panel with a 120 Hz refresh rate, this will be an ultimate product competing against NVIDIA's BFGD (Big Format Gaming Display) ) LCD screens.
What is noteworthy is that Dell no longer sells the UltraSharp UP3017Q OLED monitor, so the company might review its OLED offerings in general and the 55-inch panel can be used not only for the company's gaming solution.
Sources: Tom's Hardware, Engadget