Crestwood had a significantly different appearance in the PAX Prime 2013 demo than it does in the final game. In the demo Crestwood was a vivid, thriving area filled with soldiers and castles. In the final game however, it's depicted as gloomy, rainy, and overrun with demons.
Since the game ends on an ambiguous note, the story is actually concluded in the game's downloadable single player add-on called Trespasser.
First in the Dragon Age Series to feature nudity.