Disney confirmed a major update is coming to Epcot late last year but hasn’t announced any details on what those plans would include.
Early speculation says that a new pavilion about Brazil might be on the way. The interest in bringing the Brazilian culture to the park is not new. Dusty Sage, the Executive Director of both the Walt Disney Birthplace and the Dick Van Dyke 
Foundation, gave hints of a South American country being added to the World Showcase. Brazil was back in the spotlight in 2014 when a well-known Disney insider leaked supposed concept art of the new pavilion on the WDWMagic forums. In that image, we see what looks to be a carnival celebration with a model of the Christ the Redeemer statue in the background.
Half of the year has passed by. Let’s wait and see.