One of the best things about C is it is not upgraded frequently like other languages. So there are no frequent <language> <x.y> released posts here like we see for other languages.
On the downside, when it does get updated, compilers take ages to implement the new features, and in the meantime make up busywork like "let's break OS kernels or crypto code to get faster in some random benchmark nobody cares about!"
gcc is generally used as a testing ground for new C/C++ features. So in most cases, the compiler supports new features before they are 'officially released' into the language.
It's the complete opposite of waiting for a feature to appear in the compiler.