Descriptions of C++17 features, presented mostly in "Tony Tables" (hey, the name wasn't my idea)
Some sources and/or places for good C++17 info:
https://jfbastien.github.io/what-is-cpp17/#/
https://skebanga.github.io/structured-bindings/
http://www.bfilipek.com/2017/01/cpp17features.html
http://en.cppreference.com
http://stackoverflow.com
Bryce Adelstein Lelbach's talk to be seen at C++Now 2017
Caveat: C++17 is not completed yet. One or more of these features may be changed or removed.