I apologise if someone else brought this up and I missed it:
Examining the Epcot posters that were up for D23, the original one for when Epcot began says, 'The 21st century begins October 1, 1982'.
The new one, that has the same graphics says, 'On the brink of a new age October 1, 2019'.
Anyone else think there's a chance something gets announced on October 1?
I was thinking that would be when they started construction, but I guess they already have to an extent. My other thought was that was when Spaceship Earth would close for refurbishment.