There have been reports of Disney already testing out their "queueless" system that will be incorporated in Dumbo's Circus in the FYL expansion. I've retreived these articles from Attractions Magazine explaining the times they have tested them. So far it's been twice. Once on the Rock n' Roller Coaster and another in Pooh's Play Area.
http://www.attractionsmagazine.com/...m-testing-continues-at-rock-n-roller-coaster/
http://www.attractionsmagazine.com/...es-may-point-to-upcoming-fantasyland-changes/
http://www.attractionsmagazine.com/...m-testing-continues-at-rock-n-roller-coaster/
http://www.attractionsmagazine.com/...es-may-point-to-upcoming-fantasyland-changes/