At D23 Expo Japan and the Disney Parks Blog, Disney confirmed that the upcoming Guardians of the Galaxy attraction will be a roller coaster as has been rumored. The attraction was described as one of the world's longest enclosed roller coasters and will feature a "new innovative ride system".
At the expo, Bob Chapek, Chairman of Walt Disney Parks & Resorts, said:
The “Guardians of the Galaxy”-inspired coaster is part of our ongoing work to transform Epcot into a place that’s more family, more relevant, more timeless and more Disney. “As we build upon its core mission of optimism and hope to inspire the world, the real will become fantastic and the fantastic will become real—in whole new ways at Epcot."
Our full Guardians of the Galaxy Attraction rumor tracker can be found here.