A detailed list that is regularly updated, with exact version numbers has been around for years on the stdcxx Wiki:

http://wiki.apache.org/stdcxx/C++0xCompilerSupport

Indeed, I suspect it's a reasonable bet that the guy (Korban) just used the apache.org page and reformatted the contents with his target audience and personal goals (which seems to be selling his book) in mind.

[Which is not a bad thing, mind you—the apache page is fairly accurate and up-to-date (at least for the major compilers), so it's better people use that as a reference than doing it themselves badly. It would have been nice if he'd included a link though ...]

Which also has nice links to the specs for each feature.

That site should clarify that they are talking about the open source Clang 3.1 and not Apple Clang 3.1. Apple is unfortunately using the same version numbering as the open source clang yet their compiler is significantly less featured. It's ironic that Apple started clang, yet their clang is the most out of date.

This is missing the supports list for the Intel Compiler (which to my knowledge has a pretty good C++11 coverage).

Isn't Intel using a modified EDG front-end? Or has Intel completely customized EDG to the point that they are maintaining their own branch?

There are still a few features that C++ lacks. If it only added a s-expression syntax and macros, and built-in logic programming support, it would be perfect!

GNU tracks C++11 support in recent gcc versions here:

http://gcc.gnu.org/projects/cxx0x.html

This is desperately missing color coded cells :(

So is the linked wiki at apache.org.