From Disney:

After nearly 20 years of delighting Epcot® Guests with the emotional story of humanity told through music, fireworks, light torches and more, we wanted to let you know that “IllumiNations: Reflections of Earth” will be ending in the second half of next year.The Disney Parks Live Entertainment team is already busy creating new thrills to debut immediately following the conclusion of “IllumiNations,” continuing the tradition of nightly entertainment on the World Showcase Lagoon.