Support for Linux, OS X en-route. http://www.bit-tech.net/news/bits/2014/11/13/net-core-open-source/1
More important is that they released the Visual Studio Community, which is pretty much free for all except companies with more than 5 developers who would use VS. Plus some money limitations, which most of us won't see in lifetime : http://www.visualstudio.com/products/visual-studio-community-vs