I think based strictly on these aerial pictures they’re closer than many would think.
Potter looks like it could be turned over by the first week of January to a commissioning team. Again no clue on the insides but based on the scale of that land whoever was the general contractor (PCL?) they should get first dibs on next project there lol. Monsters also looks very close to being turned over. Not sure of effects, again no clue on inside the Village but man it appears its close.
Dragons has scaffolding all over the land, a lot of work to do with the play area, the stands for the flat rides etc. Nintendo looks to be the furthest behind in terms of the 4 main portals. Maybe it will come together quick but it appears that would be the land furthest from being ready based on pictures from a helicopter.
Overall I could see everything being turned over to their commissioning teams by February with all final touches being complete before March park-wide.
From there I think we see TONS of special events, corporate events, previews etc etc.