I imagine it will be like the naval parts of Assassin's Creed III somehow...
Just going to also say that my original thoughts on the aforementioned Assassin's Creed III were completely correct in my opinion: the free running in forests is pretty damn awesome, and the war was quite tastefully done - while there was some american patriotism as I expected, the database entries and Shaun in general were hilarious to my sense of humour. However the micromanagement was slightly tedious - for example I only used that homestead trading thing in the actual mission I had to, because other than that I just went on the main quest killing everyone before I got bored of my own hunting company. I also felt no need to upgrade weapons or the like as I was effectively invincible, dying very, very few times in the main storyline. Overall it was a fun game, and tastefully done, but a bit boring due to attempts at unnecessary micromanagement.