This D23 is Star Wars. 2019's will be all about WDW's 50th.
I have to believe that most of the current permits and rumors are for the 50th or later.
Seriously, the 50th starts in 3.5 years. It takes Disney 2.5 years to build anything. Even if they announced it now, they wouldn't be open until the 50th. Given that they usually wait 6-8 months after announcement to break ground.
And remember that Epcot has it rumored revamp happening heading into it's 40th Anniversary. So I predict only one of Epcot's projects gets announced at D23 2019 for the 50th. The rest held back until D23 2021 for Epcot's 40th blow-out announcement.