Karelia was very specialized map, basically a labor of love by Blauk and Kantorri where everything on the map was basically a custom object or field. So there is nothing really to convert over because AH3 does not support AH2 objects and those objects would have to be redone by scratch (the trenches, custom cities, etc.). It was also a 128 mile by 128 mile map.
That said I am right now Finland South. This is going to be 512 mile by 512 mile map and covers southern Finland, Estonia, half of Latvia and and chunk of the northern Russia Front (Leningrad to roughly half the distance to Moscow). So it would be good for Continuation War and also good for Germany's drive on Leningrad and such.
So yes, Winter is coming.
