In January 2019, Alienware demonstrated a gaming monitor that uses a 55" 4K 120Hz OLED display. This monitor supports 4K at 120Hz using the new HDMI v2.1 connection (also supported by LG's latest 2019 OLED TVs).
Alienware now updates that it is not ready to launch this monitor yet as it is still a "conceptual product" and that its "potential commercial viability is still in question". The company did say that if the product progresses, it will make an announcement at CES 2020. This will be a premium product with a price tag of over $3,000.
Posted: Jun 18,2019 by Ron Mertens
FYI: The co-founder of Dell, as well as Dell later in the week, clarified it is not cancelled and it WILL launch in Q4 in "select markets": https://twitter.com/AzorFrank/status/1140778570740097024
It was indeed at a conceptual stage in CES but it's still on track to launch during the 2nd half of this year as originally announced.