Mingw-w64 is an advancement of the original mingw.org project, created to support the GCC compiler on Windows systems. It has forked it in 2007 in order to provide support for 64 bits and new APIs. It has since then gained widespread use and distribution.
The development and community are very active and welcoming with new contributors every month and simple installers.
initial Release: 2016-10-19
You can also look at the full list of versions.
Mingw-w64 interacts a lot with other projects in order to help everyone move forward. Contributions have been going to and coming from these projects:
Cannot download repository.txt
widl: Readd CFLAGS for optimization
widl: Don't try to import libloaderapi.h
widl: Allow importing wine sources from an out of tree wine build
widl: Regenerate Makefile.in
widl: Add a local patch for reapplying "widl: Relocate DEFAULT_INCLUDE_DIR" after imports
widl: Don't run autoconf as part of wine-import.sh
This ticket may be closed.
As it happens, there is 3 instances of this typo (see attachement).
Typo in <d2d1.h>