I think the opposite is true. First, the backwards compatibility is a key feature. You can open a project written several years ago, and add a new feature to i

I think the opposite is true. First, the backwards compatibility is a key feature. You can open a project written several years ago, and add a new feature to it using the latest language syntax without being forced to rewrite all the old code. I'm not quite sure about stock visual studio (since I don't use it), but Resharper (and their new Rider IDE, which I've played with a bit) is pretty good at highlighting code doing things the old way and even automatically rewriting it for you. This seems to be getting better as they take advantage of what the Roslyn compiler can help with. .NET Core, native, and the work of Xamarin only means more cross platform support, which allows broader use beyond just the Windows world. The ecosystem is starting to get caught up now, and between most popular libraries being available and the feature parity reached with .NET Core 2.0, things are looking great for it to grow even more popular.