Firewatch is a first-person single-player mystery set in the Wyoming wilderness, where your only emotional lifeline is the person on the other end of a handheld radio.
Alongside their announcement, they’ve produced an absolutely gorgeous reveal page. Seriously, click that link and check it out. If that’s indicative of the attention and care going into the art for the game, it’s going to be very interesting to see what it ends up as.
If you’re enthralled with the art as much as I am, I’ve made a 16:10 retina-ready wallpaper, available here.