These are probably the last major screen shots before THE OFFICIAL RELEASE. Oooph. Tasty.
You've seen the center of the mainland, and now it's time to see the far dividing lines. You can plan a direct invasion from the three central chokes I showed off last time, but there are also long ways around to the enemy front.
The sunken plaza is one end of the dividing line between the two teams. A once prominent garden is now buried under waves of sand, and is exposed to both ground and sea assaults.
The Cloven Father, the river that runs right through the northern end of the island, is the other end of the dividing line. It's completely symmetrical to the sunken plaza, with the same pros and cons. It's not deep enough to carry ships, but it's shallow enough for ground units to pass through without issue.
The rest of the features you'll have to explore for yourself upon release. Of course I kept the best junk to myself.