Asus has a 32-inch 4K gaming monitor with HDMI 2.1 shipping later this year - The Verge
Dell S3220DGF - 32-inch 1440p 144hz curved gaming monitor | Monitors | City of Toronto | Kijiji
GIGABYTE M32U 32" 144Hz 4K AdaptiveSync Compatible Gaming Monitor, SS IPS, 3840x2160 Display, 1ms Response Time (MPRT), 1x Display Port 1.4, 2x HDMI 2.1, 2x USB 3.0, 1x USB Type C