Guests trying to make FastPass+ reservations at Epcot starting on September 28 have noticed that Maelstrom is not listed as being an option. It is unknown if this is due to an unannounced refurbishment, system glitch, or attraction closure.
It has been rumored that Maelstrom would close to be replaced by a Frozen attraction. It is unknown if there is any truth to that rumor as the lack of FastPass+ availability may be due to a less exciting reason.
It should be noted that September 28 is the start of The Walt Disney Company’s fiscal year. Historically, many attractions begin construction at that time as funding becomes available on the new year’s budget.