[YorkshireT]

They'll likely do a soft opening first, for AP and DVC owners, before opening fully. I suspect they'll be hoping to be open for memorial Day (end of May) but if it slips 4th July instead.
They are not the quickest at building stuff, and it often seems to take much longer than initially expected.
Which is ironic when you consider they built the entire magic kingdom, the Contemporary and Poly, and the infrastructure in about 18 months. Now it takes that to convert the Great Movie Ride to Mickey and Minnie ride.