To my knowledge they have no inside info that has told them it is open on July 1.
I think that is their best guess/place holder that they have to use for their touring plans app.
Best I have learned, they put an end date on an attraction that is being refurbed so it can be added to their attraction list for creating a touring plan.
They'll pick the 1st day of the month after they think it will be open.
Most likely it will open sometime in June and that's why they want it back on the list for July.
If that makes sense.