A turn-of-the-year retrospective:

C++ Status at the end of 2014

by Bartlomiej Filipek

From the article:

This was a good year for C++!

Short summary (language features):

• Clang supports C++14
• GCC supports C++11 and most of C++14 (Full support in upcoming GCC 5.0)
• Intel 15.0 supports C++11 (some features on Linux/OSX only)
• Visual Studio tries to catch up with C++11, but it also introduces C++14 features as well... and it become (almost) free!