At the July 2009 meeting in Frankfurt, Germany, the C++ Standards Committee voted to remove "concepts" from C++0x. Although this was a big disappointment for those of us who have worked on concepts for years and are aware of their potential, the removal fortunately will not directly affect most C++ programmers. C++0x will still be a significantly more expressive and effective language for real-world software development than C++98. The committee acted with the intent to limit risk and preserve schedule. Maybe a significantly improved version of "concepts" will be available in five years.

Quelle

Sehr schade, ich hatte mich schon auf Concepts gefreut.