At the D23 Destination D Event, Bob Chapek (Chairman of Disney Parks, Events, Consumer Products) announced an update is coming to the 360-degree O Canada! show at Epcot's Canada Pavilion.
Additional details are not available, but speculation is that this will employ the same seamless 360-degree presentation in development for the China Pavilion. Our full rumor tracker for the O Canada! updates can be found here.