Hmm, this seems to be "MinGW and why Linux developers and free software advocates should care". Maybe I'm splitting hairs, but I see nothing here to care about as a Linux user. Ho hum, some stuff can run on windows, which I don't use.
Sure the theory is that making these tools available to windows users will enable them to transition away from proprietary tools, but I don't buy it. I switched from windows to Linux in 1996 with no pain at all. If what Linux offers was compelling to most people, they would have already transitioned. I don't see any benefit to those who care about free software, because they're already off windows. I don't see any benefit to linux users in making linux desktop apps run on windows. The basic tools already work after a fashion in cygwin, and have for a long time.
I'm certainly not upset with these developers for working on this project, but I don't really see a benefit to me, the Linux user.