NVIDIA introduced a G-Sync compatible liquid crystal panel with a refresh rate of 500Hz at the keynote speech of COMPUTEX TAIPEI 2022.

SUS will reveal the "ROG Swift 500Hz Gaming Monitor," and the LCD panel will be the "Esports TN Panel," which is specifically intended for eSports. Furthermore, it has "NVIDIA G-SYNC Esports Mode" and supports "Esports Vibrance," which improves target visibility. Ghosting is greatly decreased compared to the standard model by supporting a refresh rate of 500Hz, allowing for more accurate targeting. As before, it features "NVIDIA Reflex Analyzer," allowing you to measure system delay while using an NVIDIA Reflex compliant mouse and GeForce series GPU. 

Acer has introduced a 28-inch gaming liquid crystal display "Predator X28 G-SYNC" compatible with 4K / 152Hz, as well as Cooler Master "MM310" and "MM730" gaming mouse, as items compatible with "NVIDIA Reflex Analyzer."

Update: added ASUS press release

ASUS Republic of Gamers (ROG) today announced the ROG Swift 500Hz, the world’s first 500 Hz refresh-rate esports gaming monitor. The Swift 500Hz features a 24.1-inch FHD (1920 x 1080) display that utilizes Esports-TN panel (E-TN) technology to produce 60% shorter response times than standard TN LCD displays, making it the fastest LCD display ever. The Swift 500Hz includes NVIDIA® G-SYNC®, and the enhanced Esports Vibrance mode — specifically tuned for esports — built directly into the monitor firmware. It allows more light to travel through the LCD crystals, giving colors new levels of vibrancy. With latency a crucial factor in esports gaming, the Swift 500Hz also includes NVIDIA Reflex Analyzer, allowing gamers to measure latency with just a single click.
ASUS ROG has always pushed the boundaries of display technology. A decade ago, ASUS introduced the world’s first 144 Hz 1080p gaming monitor. In 2017, ROG introduced the first-ever NVIDIA G-SYNC 240 Hz gaming monitor. And in 2020, ROG unleashed the first 360 Hz gaming monitor.

Pushing the limits of display technology
"When we introduced the first 144 Hz monitor in 2012, people said the human eye can only perceive 60 frames per second,” explains Gavin Tsai, Display Product Manager for ASUS. “Then, when we introduced our 240 Hz monitor, they said the human can’t perceive the difference,” continues Tsai. “Today, in a market where 144 Hz and 240 Hz gaming monitors are common and standard specs, we are breaking entirely new ground with the incredibly fast ROG Swift 500Hz.”
With reduced motion blur, improved visuals and lower input latency, the ROG Swift 500Hz is designed to give professional esports gamers an advantage in tournaments. One of these impressive features – the extraordinarily low latency – is made possible in part through a vital partnership with NVIDIA. “The ROG Swift 500Hz with NVIDIA G-SYNC technology provides gamers the lowest latency available of any monitor on the market,” said Seth Schneider, Esports product manager at NVIDIA. “And with NVIDIA Reflex Analyzer on board, gamers can measure their latency with one click, ensuring the fastest response times for the most intense games.”