Great news. The blog post discusses C++ specifically, but I wonder what (if anything) this means for C, which has traditionally been a pain in the ass in Windows due to Microsoft's refusal to support C99 (though that may be changing [1]). If they're using the native MS libc (which is great for integration purposes), it's possible they simply can't implement some features anyway.
[1]: http://arstechnica.com/information-technology/2013/06/c99-ac...