Epcot is undergoing a major, multi-year transformation at Disney World.

• New Epcot transformation concept art released
• Redesigned entrance, new attractions, preview center
• PREVIOUS: Disney reveals more details about Epcot's transformation

And although we'll learn more about the theme park's future Sunday, a few new details have been shared early.

On Thursday, just ahead of its D23 Expo, Disney released new concept art of the planned changes.

For starters, the entrance of Epcot will be redesigned, with a new fountain, removal of the Leave a Legacy monuments and the addition of two pavilions—the Play Pavilion in the Wonders of Life building and the Walt Disney Imagineering presents the Epcot Experience in the Odyssey Pavilion.

The Epcot Experience will be a preview center where, in October, visitors can see all of Epcot's upcoming changes. The center will include interactive exhibits.

In addition to the pavilions, Epcot will also be getting a Moana-inspired attraction, a fireworks show to replace IllumiNations: Reflections of Earth, a Guardians of the Galaxy roller coaster and a Ratatouille ride in the France pavilion.

The transformation will make Epcot, "more Disney, more family, more timeless, and more relevant to the millions of guests who visit each year," Disney Parks, Experiences and Products chairman Bob Chapek said.

Chapek is set to share more details about Epcot's transformation during a presentation on Sunday.