I think in the 2nd edition, if you land on the old City space, you place your piece on that new city board's city gates, but those boards were 'side' boards, not fitted to go around like in 4th.
So, in my estimation they will place the City space folks in the new board, spiffy new shops, etc. (maybe the Enchantress will have other options too?)
I'd like to see something more visual that will show players what to do when they land there (the previous mentioned 'gate' plastic piece?)
Yeah, maybe they will add the city space folks to the City expansion.
Third edition is different. There is only a market on the city space. But the Enchantress, Doctor and Alchemist came with the city expansion.
But with 4th revised edition, they are already on the mainboard.
I am not sure, but i have look at the rules for the City from 2th edition, and it seems that the enchantress is inside the city too?
If this is the case, then i think the same will happen with this edition.