Sounds like a cut.
Take a not very popular attraction with a somewhat dated IP and make it seasonal?
I am sure they save a lot of money for an attraction not being open during down times. Cast members, electricity, maintenance, etc.
In other words. We are cutting staff to save money, but will open this attraction to help suck up crowds during busy times.
Sounds like the death knell of the attraction. They would just shut it down if they were planning on making a new attraction there.
But .. optimistically, maybe it is part of some unannounced Tomorrowland refurb. They already painted the rocks just outside the attraction.