There’s a guy who did as a PHD, a book that summarizes the innovations in C++14. I was positivly surprised about the summarization and relevance.

several links
His book I have found in Google

His lecture 1

His lecture 2

Someone else about the same subject:

Modern C++: What You Need to Know
Documents say how to write correctly the new C++

code::dive conference 2014 – Scott Meyers: Support for Embedded Programming in C++11 and C++14
copy of a same thing edited differently

Then there is also the CPPCON. Link to all CPPCONs, There is also of year  2015

Less relevant: – Something in Russian
Error corrections to the book