Without speaking specifically to the dam location you *will* see new art in the game world with the next sandbox update leading to launch, per our Dev Diary: http://www.thelongdark.com/news/posts/light-at-the-end/ This all leads to launch, of course, but we'll have a much better idea when the test branch opens on what's ready to put out into the wild. The new trailer gives you a good taste of what we've been up to though in terms of art improvements overall. A lot more texture.