That trailer really gave me the feeling that this game is setting in the Dark Ages, and that I began to doubt the name “The Dark Ages” is a bad name for that age.
It really had much information about the game like there are small villages complete with a whole community with every character serving his role in this small society.
Also the beginning of the trailer feels like you wake up in a world where everything is fresh and natural.
That a day starts anew with a smell of grain, hay, bark and conifers. That a day starts to work at the farm to keep your community well fed and to keep it well supplied with common tools and luxury goods. That you work with a purpose.
And I hope that religion also plays a big part in this game, but not to Catholic, more like Thomas Aquino intended that this world is lend to you by god and that you must preserve it and be thankful for it by cherishing god and respect him by paying your respects to everything you take from the world (I am not religious, but if I lived in the Dark Ages, I probably would be and that the way to go is like Thomas Aquino intended).