According to Twinfan, the realtraffic feed is ready to go. He suggests people plan to test it with 3x5 min per day free trial to see if it's worth the real money it will cost.
https://forums.x-plane.org/index.php?/forums/topic/176278-realtraffic-to-come-soon/
https://forums.x-plane.org/index.php?/forums/topic/176278-realtraffic-to-come-soon/