All the major compilers support at least some of the standard now, but I'm not aware of any that support all of it.
For details consult the following:
http://clang.llvm.org/cxx_status.html
http://gcc.gnu.org/projects/cxx0x.html
http://blogs.msdn.com/b/vcblog/archive/2011/09/12/10209291.a...
Re:9 reasons to start using C++11
by nonsequitur on Friday May 11, 2012 @03:21AM
(#3958119)
C++11 support in common compilers:
http://wiki.apache.org/stdcxx/C++0xCompilerSupport
Portability is probably the main reason I'm concerned about switching my codebase to the new standard...