Filoni spoke about the timeline for the upcoming film and said that he thinks of this as the “New Republic time period” and that it was there before they started on “The Mandalorian.” He said of their methods:
“The idea that after ‘Return of the Jedi’ there was a New Republic, and that the heroes still had to defend that Republic from the remnant Empire is a very old idea that we brought into the first season of ‘The Mandalorian.’ Because it’s what was always there.
“So as we’ve gone along, I’ve kept a very large diagram whiteboard timeline. And as we build the story, I show it to Jon and I’m like, ‘If we do this … It’s almost like a crime scene … We could lead to this. And then that could mean we could do this.’ And he said, ‘Well, what about this?’ I’m like, ‘Yes. Well, let’s put that up there.’ And so a lot of times we can move them and keep it movable.”
I feel like it would be a public service to let us see this whiteboard timeline, but that’s probably not in the cards. Plus, there would likely be a lot of spoilers. Favreau added that they have to continually check where they are on the timeline both with the shows that are out there and the scripts they’re checking on.