Root around the News and Rumors board. Discussions and planning are well under way. Adding the Ratatouille ride from DLP to the France pavilion, a new, small flat ride at UK, the addition of Brazil and perhaps one other country to World Showcase, updates to the Mission: Space show, and a Guardians of the Galaxy or other new attraction where Universe of Energy is are all ideas that have been rumored as in the works. Some have supposedly been green lit and funded. With Shanghai now complete and WDW's 50th Anniversary coming up in a few years, I would expect to see some at least some significant changes, upgrades, and/or refurbishments at Epcot.