Walt Disney World is set to undergo significant changes as the company announced new attractions during the D23 Expo, including a Villains Land and sections themed to 'Encanto' and 'Cars.' The overhaul will involve the removal of classic areas such as Tom Sawyer Island and the Rivers of America to make way for the new 'Cars' themed attractions. This decision has sparked criticism among long-time fans, who feel Disney is prioritizing corporate interests over its heritage. Additionally, the park will introduce a new 11-acre 'Tropical Americas' land in Animal Kingdom and new Marvel rides in Disneyland. While fans will have some time to enjoy the existing attractions, they are urged to visit before they close for the renovations, which are part of Disney's efforts to compete with Universal's new theme park developments. The changes are part of a broader strategy to revitalize Disney's theme parks amidst declining earnings and increasing competition.