Definitely have fans. The design video[1] has a segment at 2:30 about thermal management. 1 - http://images.apple.com/media/us/macbook-pro/2016/b4a9efaa_6fe5_4

Definitely have fans. The design video[1] has a segment at 2:30 about thermal management. 1 - http://images.apple.com/media/us/macbook-pro/2016/b4a9efaa_6fe5_4075_a9d0_8e4592d6146c/films/design/macbook-pro-design-tft-cc-us-20161026_1536x640h.mp4 http://images.apple.com/media/us/macbook-pro/2016/b4a9efaa_6...