I think it's coming. There was a HN post about MS working on bringing Obj-C to MS without any kind of emulation layer simply by leveraging llvm and the existing MS C++ compiler. It's called Project Islandwood (https://dev.windows.com/en-us/uwp-bridges/project-islandwood) and in a video presentation about it there was also mention of work on Swift (although Swift support wasn't official). MS is really moving in some interesting directions these days and I'm all for it.