To be honest not everything about Future World was about the future even from the beginning. Spaceship Earth is a ride through history. So was World of Motion. Universe of Energy went the furthest back to the past, back to the dinosaurs (well, even to "the deluge"). It did have some message in the post-show film about solar energy or something I think. Imagination is not tied to any particular time period. So really the only futuristic original pavilions were The Living Seas, The Land (a little bit, about hydroponics and such), Horizons, and Communicore. Then Wonders of Life when it was added.
At least, however, all the pavilions were quite educational. They seem less so now.