NVIDIA today announced the G-SYNC HDR technology - an evolution of the company's proprietary adaptive display sync technology, which keeps the display's refresh-rates dynamically in-sync with the graphics card's frame-rates.

G-SYNC HDR, as its name suggests, adds support for HDR (high dynamic range) displays.
NVIDIA has partnered with display manufacturers such as Acer, and ASUS have each announced displays with this technology, which will will be available later this year.