It doesnt need to get through any committees to have impact. Microsoft just has to use it (which i assume they are given they are the authors) and then its had impact.
Unless they have changed course, it seems more likely that Microsoft will drop NT for a UNIX kernel than Microsoft would put this into their compiler. I assume that this is by Microsoft Research and work by Microsoft Research is almost never used by Microsoft. The only exception I know is Drawbridge, which they reportedly used in Azure.
Supporting only some features of a spec means that they do not conform with the spec.
Msvc is still stuck with C89, and it won't budge.
> For many years Visual Studio has only supported C to the extent of it being required for C++. Things are about to change now that a conformant token-based preprocessor has been added to the compiler. With the advent of two new compiler switches, /std:c11 and /std:c17, we are officially supporting the latest ISO C language standards.
> All the required features of C11 and C17 are supported.