Asus already has one out.
http://www.tomshardware.com/news/vg248qe-g-sync-nvidia-asus,24766.html
The first in Asus's new family of G-Sync Enhanced displays will be an updated version of the VG248QE, which featured a W-LED backlit 24-inch TN Panel with a resolution of 1920 x 1080, a 1 ms GTG response time and 144 Hz refresh rate.
The G-Sync Enhanced version of the Asus VG248QE is expected to arrive on store shelves in the first half of 2014 with a price of $399 in North America.
I actually have an ATI card atm.. if this works as well as people claim ATI will copy it and that monitor will replace my Acer 22 from 2005.. Hope I can get a 3D one..