I have a feeling that the forth picture down on the left may be Monte Grappa or Empire’s Edge again, because those soldiers are Italian. I suspect the 9th map will be one that features the Americans, because at the moment it seems like they only get one map which is Argonne (unless they get Chateau, though concept art seems to imply that’s for the British).
As for the 10th map, based on a leak I saw a while ago, I think it’s going to be another desert map set during The Battle of Fao Fortress, also known as the Fao Landing. It was the British amphibious assault that kickstarted the Mesopotamian campaign and will likely feature the battleship as its Behemoth.
I’m especially looking forward to Amiens. Not only is it a urban map built with BF1’s destruction engine, but the behemoth, according to concept art, is the train! Imagine that train speeding through the city, enemy soldiers in every other window. It would be havoc!