A couple of years ago multiple companies, including ASUS announced their Big Format Gaming Displays which were completely over the top and amazing. They did launch, some to middling reviews, and you can buy the HP OMEN X Emperium 65 display from Currys for a bargain £3,499.00.
This year, a more sensible solution as put forward, both ASUS and Acer announced two 43-inch FreeSync monitors. The Acer Predator CG437K and the ASUS ROG Strix XG438Q.
The ASUS ROG Strix XG438Q does all the stuff you wanted from the Nvidia's Big Format Gaming Displays but in a smaller more affordable package.
It is currently expected that the monitor will launch this August for £1099
This is a 43-inch 4K monitor with refresh rates of up to 120Hz and support for AMD's FreeSync 2 HDR technology and VESA DisplayHDR 600. In fact, it exceeds the spec for those standards with the screen's local dimming features and its maximum brightness level of 750 nits. The screen also sports an anti-glare coating and what ASUS calls “Gamefast Input Technology” to minimise input latency and reduce screen glare.
This screen supports AMD's FreeSync 2 HDR standard with a variable refresh rate (VRR) range of 48-120FPS. This is more than enough to active AMD's low framerate compensation technology. Input-wise this TV-sized monitor supports three HDMI 2.0 inputs as well as a single DisplayPort 1.4 connection, making this monitor usable with both gaming consoles, home entertainment systems and PCs.
The XG438Q also supports picture-in-picture mode, with a main screen and inset window, along with a picture-by-picture mode that divides the monitor in half.
The monitor has not been formally verified by Nvidia as Gsync compatible, but this is the case for many monitors. Nvidia appears to be quite slow about this process. The monitor should be compatible though and you will need to activate Adaptive-Sync support within the drivers on uncertified displays, so we will have to wait and see how well this monitor works on Geforce hardware.
This monitor is expected to use a VA type panel and should deliver respectable levels of HDR support with 10-bit image processing, 750 nits of peak luminance, local dimming and both FreeSync 2 HDR and VESA DisplayHDR 600 certifications. The screen will also cover 90% of the DCI-P3 colour space and offer users three distinct HDR modes, ASUS Cinema HDR, ASUS Gaming HDR and FreeSync 2 HDR.
Looking at the rear of the display seems to indicate that there is no VESA mount which would be unusual for a monitor/TV of this size. For me, this is something that would genuinely stop my buying it, I used to use a 40-inch screen as my main monitor and it greatly benefits from being wall mounted so you get extra desk space and sit a little further away from it.
[Update about VESA] It appears I was wrong, on one of the pre-order pages there is a full specification list which states VESA wall mounting 100x100mm