Sad news indeed. The talented and passionate designer that gave Fallout 3 and Skyrim their distinctive look, Adam Adamowicz, has died. A humble man who had very little recognition nor a need for it, but was extremely passionate about his job, as proven by his workspace that had every available inch covered by hand-drawn art. You can read the story from a fellow concept artist and see a degree of his artwork here. He can put this into words better than I can.
May he rest in peace.