Microsoft leaked a picture of an unnamed black, sleek looking device on its Instagram.  Speculation is that the picture models part of the Surface Book 2, with a slimmer hinge that differentiated and popularized the original Surface design. Still, this is more preliminary buzz than ready to release product.

Source: https://techcrunch.com/2016/08/29/microsoft-teases-what-looks-like-a-black-surface-book-2/

Image Source: By Lachlan Hardy of Flickr [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons