An anonymous reader writes "LLVM's libc++ standard library (an alternative to GNU libstdc++) now has full support for C++1y, which is expected to become C++14 next year. Code merged this week implements the full C++1y standard library, with support for new language features in the Clang compiler frontend nearly complete."
GCC has some support
for the soon-to-be standard too. The C++ standards committee is expected to produce a more or less final draft in just a few weeks
. The LLVM and GCC C++14 status pages both have links to the proposals for the new features.