I think the discrepancy is the difference between structures being complete to support things and the structures being completely filled in. I believe Chris was saying the skeleton of the game is done, but the contents still need to be pushed into shape.
I've gone ahead and maxed out linguistics with the other races and the options are there, but don't have the backend support built in yet. Regardless, Chris knows it isn't there, and has told us to worry much about it, so I've generally left it alone and focused on the other parts of the game.
Like farms. I want more farms. I want to have a city that exports food. I want field bonuses to adjacent fields. I want to see an improved irrigation system that boosts yields in adjacent farms. I want different types of fields, with orchards, and fruit vines. Livestock would also be awesome.