The ASUS TUF Gaming VG279QM is a monitor that will be available in US and Europe in 2020, and currently is available for purchase only from Taobao. It seems like this ASUS monitor has support for overclockable 280Hz refresh rate and an IPS panel.
This ASUS TUF Gaming VG279QM uses a maximums screen resolution of 1920 x 1080, IPS panel that is NVIDIA G-Sync and AMD FreeSync compatible, 1ms Gray-to-gray response time, 1000:1 contrast ratio, 400 nits brightness, wide viewing angles, 99% sRGB color gamut, 8bit color depth, a native refresh rate of 240Hz and it will support 280Hz overclockable refresh rate like I said already above. Note that the maximum refresh rate of 280Hz will only be supported via DisplayPort cable.
Also, the ASUS VG279QM gaming monitor offers Extreme Low Motion Blur with 1ms MPRT with strobing blur reduction backlight. It is also VESA DisplayHDR 400 certified and it offers connectivity via DisplayPort 1.2 and two other HDMI 2.0 ports. The design on this model follows ASUS' normal look with Aura sync RGB back-lighting. The monitor's stand also allows position adjustments as you can change its tilt, pivot, swivel and height. The monitor will be available for purchase in 2020 in US and Europe. Currently, you can find this model on Taobao.