It's a pretty safe bet that anything released to us Unwashed Masses (ie,, Da Public) will be artificially 'manufactured' to avoid releasing too much information, or information about features that may be abandoned or modified before the game comes out. On the other hand, given the Food-Industry-Gold("Dust" from EL) -Science-Influence model, they could have several different 'specialized' Districts from very early. Or they could refurbish the EL model and have single type District for everything except Harbors. I doubt that they will do that, because as was pointed out, there seems to be a graphic differentiation between 'Districts' within the nominal city wall as well as a graphic distinction between tiles adjacent to the city and tiles further away in the same region (assuming the entire land area in the latest screen shot is all one region). Given the more complex requirements for a 6000+ year span Historical Game compared to a Fantasy game, in which you may have to show Industrial 'districts', entertainment and religious complexes, railroad, airport, and commercial 'business' districts, I would expect distinctions between Districts from the start, so that the city will begin laying down 'farming/Food", "Manufacturing/Workshop/Industrial", and "Trade/Commercial/Gold" districts early. Science, Religion, and the Military might get their own Districts as well, but now we're getting very close to copying Civ, and I don't think they will do that. They've got a Blank Slate to work on and different set of mechanisms in the Endless games that they've refined for several years. They have no reason to simply copy the districts from Civ VI, and every reason from both a design and commercial standpoint to do something Distinctively Different.