Details of the attraction, based on James Cameron's 3D blockbuster, were revealed at the D23 Expo Japan, reported Digital Spy.
Walt Disney Imagineering, working in collaboration with Cameron, will bring Pandora to life with "floating mountains, bioluminescent rain forests and soaring Banshees".
Images released by Disney also show a prominent Tree of Life from Avatar, seen in context of other parts of the theme park.
The development is part of an extension of Disney's Animal Kingdom. Current work will also introduce new nighttime entertainment to the venue.