C++11 (formerly known as C++0x) is the most recent version of the standard of the C++ programming language. It was approved by ISO on 12 August 2011, replacing C++03. The name is derived from the tradition of naming language versions by the year of the specification's publication.
C++11 includes several additions to the core language and extends the C++ standard library, incorporating most of the C++ Technical Report 1 (TR1) libraries — with the exception of the library of mathematical special functions. C++11 was published as ISO/IEC 14882:2011 in September 2011 and is available for a fee. The working draft most similar to the published C++11 standard is N3337, dated 12 January 2012; it has only editorial corrections from the C++11 standard.
Work is currently under way on C++14 and C++17 standards.
Read more about C++11: Changes From The Previous Version of The Standard, Extensions To The C++ Core Language, Core Language Runtime Performance Enhancements, Core Language Usability Enhancements, Core Language Functionality Improvements, C++ Standard Library Changes, Features Originally Planned But Removed or Not Included, Features Removed or Deprecated