Disney confirmed today that ‘IllumiNations: Reflections of Earth’ will be replaced next year. According to the Disney Parks blog, the show will run through the end of summer 2019. It's been a staple of the Epcot experience for almost 20 years at the World Showcase Lagoon. It debuted in October of 1999 for the Walt Disney World Millenium Celebration.
A new fireworks show will replace it. But beyond that Disney is keeping plans under wraps. They only hint that it'll keep to the "true original vision of the park."