The D23 Expo begins this week in Anaheim. This is the event Disney hosts as their official fan club. During this event, Disney often introduces what their imagineers have created and what plans are in the works.
This year there are a number of rumored plans for Walt Disney World including possibly replacing the Tomorrowland Speedway with a new attraction, a new gondola system connecting resorts and parks, plus other plans.
One thing we do know of is happening at Disney's Hollywood Studios. Construction of Star Wars Land is well underway and to kick off D23, Disney is showing off models of how the new attraction will look.