Well we know 5 of the zones by name. One of them was not mentioned by name, but it seems like there might be a clip of the final zone?
City States: Tuliyollal, Solution Nine
Area #1: Urqopacha (south west of Tuliyollal)
Area #2: Kozama'uka (south of Tuliyollal)
Area #3: Yak T'el (south east of Kozama'uka)
Area #4: Shaaloani (north of Tuliyollal)
Area #5: Heritage Found (north of Shaaloani)
Area #6: Maybe
https://youtu.be/wlPq3THHoIo?t=74
There is space for Area 6 to be Loazeniheta, to the east of Solution Nine. We already have 3 areas to the south, but if it was there it could be Ty'ak Tyak.
Maybe the City of Gold is a facade with how Solution Nine's description is about facades and perhaps that is part of the mystery. How a city of gold is projected but isn't really there.
We are talking about a mystery area, not a mystery city state, because both city states have been announced. So that could be a reason why the 6th area wouldn't be the City of Gold.
It was already pretty obvious from prior fan fests that it wasn't all just a holiday adventure, it's just the trailer that makes it look that way. This is what the map looks like if you pin all the concept art to where it seems to take place.
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potential spoiler warning):
Overall, looks pretty interesting and hype when you put it like that.