Watch this space for possible update
Due to other important priorities, the Safari is not currently planned for 2019.
If anything happens it will be later in the summer, possibly July.
You can still fly King Mountain, but be sure to read that post on the Road Washouts. It is accessible, but will take longer and needs a good 4 wheel truck.
You can still contact John via his King Mountain Glider Park website:
Visit KingMountainGliderPark.com Web Site