The above response from @jennyturin is on-point. If nothing formal has been announced about an attraction’s future opening, you might be able to to add it to a personalized touring plan for a future date. However, that does not necessarily imply that we have information suggesting that the attraction will be available on that future date.
If you look at our “closures” page for Walt Disney World (https://touringplans.com/walt-disney-world/closures), you should see a list of closed attractions, along with their re-opening days. If they say “unknown” or “the future,” Disney has not announced when they will open.
At some point we may try to display this attraction uncertainty in our touring plan software. It would avoid potential confusion. We’ve ended up with a lot more attraction uncertainty over the past year than we ever expected!