Found this in another article:
Those who have a GSync Compatible monitor will find GSync enabled by default with an upcoming driver update next week; those who don’t have a GSync Compatible monitor can, still, enable GSync if they so desire. Though, the company notes that it may not work – or have issues – with some monitors. Huang added that the company will continue to test several other monitors.
Apparently passing their standards for automatic G-Sync enabling are:
G-SYNC Compatible testing validates that the monitor does not show blanking, pulsing, flickering, ghosting or other artifacts during VRR gaming. They also validate that the monitor can operate in VRR at any game frame rate by supporting a VRR range of at least 2.4:1 (e.g. 60Hz-144Hz)
Also man. AMD is really going to have to hit hard with Navi now, as you can’t use Freesync being cheaper as an excuse.