(3/6/17) Is Dollywood preparing to remove the Sideshow Spin kiddie coaster??? I've been told that the old kiddie coaster, with the somewhat odd cars that feature a large Plexiglas cage-like enclosure, has been removed from the list of rides in the park on the official website, as well as being removed from the updated "2017 Ride Height and Safety Requirements" document. You can still see it on the current version of the park map on the website, however unlike every other ride in that section of the park, no information pops up about it when you mouse-over it, so I'd say it's safe to say that the ride is being removed for a future addition.
http://www.screamscape.com/html/dollywood.htm