Distilling what I read in "The Park Insider," it looks like this...
Winter 2020 — Space 220 / Regal Eagle Smokehouse (Craft Drafts & Barbecue)
Space 220 Restaurant opens in a new building next to Mission: Space. Regal Eagle Smokehouse replaces the Liberty Inn in The American Adventure pavilion.
January 2020 — Movies: Awesome Planet / Canada Far and Wide 360 / Beauty and the Beast Sing-a-long
Awesome Planet, a new movie, replaces Circle of Life in The Land pavilion. Canada Far and Wide 360 becomes the new movie in the Canada pavilion. Beauty and the Beast Sing-a-long plays in the France pavilion.
Summer 2020 — Remy's Ratatouille Adventure / French creperie / HarmonioUS
Disney's Paris Ratatouille trackless dark ride opens in the expanded France pavilion. A new French creperie restaurant will accompany the ride.
-- The new nighttime spectacular HarmonioUS Lagoon will appear at the Lagoon.
Sometime in 2020? — Wondrous China
China is getting a new movie, but Disney has not yet announced an opening date, saying only that it will debut later than the other three new movies. A 2020 debut remains our best guess.
2021 — Guardians of the Galaxy: Cosmic Rewind, Play Pavilion
2021 will welcome two more major attractions: Guardians of the Galaxy: Cosmic Rewind is the new rotating "story coaster." The new Play Pavilion takes over the former Wonders of Life next door.
2021? — Moana: Journey of Water
A new water play area next to the Imagination pavilion is part of a major reconstruction of the center of Future World. We expect this attraction to be completed sometime in 2021, though a 2020 debut isn't out of the picture.
2022 — Dreamers Point and the World Celebration Plaza
Dreamers Point will be a new, shaded, park-like area beyond Spaceship Earth, including a three-level structure that overlooks the World Showcase Lagoon. W're not expecting Dreamers Point to open any earlier than the summer of 2022.
Who knows? — New Spaceship Earth and Mary Poppins attractions
Disney has announced two more attraction projects: A redesign of the Spaceship Earth, including a new narration and show scenes, and a new Mary Poppins attraction in the United Kingdom pavilion. Disney has not announced any timeline for either, and we've not heard enough from insiders to take a guess when these attractions will open.
For what it's worth.