Tom Staggs officially announced today on the Disney parks blog that a new Frozen ride will be replacing Maelstrom.
Not too much info was given on the ride other than it's definitely happening.
I personally don't really care about Maelstrom but I know it's beloved by many. I am most worried about WS being packed with hundreds of children and parents, in this tiny space, waiting for this Frozen ride.
He also announced that Elsa will now be lighting the Castle Christmas lights everyday during Christmastime in MK, instead of Fairy Godmother and the Frozen cast will be joining the MVMCP parade.
Here is the link to the announcement:
http://disneyparks.disney.go.com/blog/2014/09/frozen-attraction-coming-to-epcot/
Maelstrom's last day of operation is October 5, 2014. Frozen ride is *tenatively* slated
To open in 2016.