My understanding is that .NET core will not include tooling. This project's focused on delivering a framework only, the Open Source Community (Mono Developers in this case) will take care of the rest.

Now, Xamarin has been doing a good job of creating beautiful and powerful tools, so I assume the tooling will be really good. Hopefully one day we will see Visual Studio supported by Microsoft on Linux and Mac.

But I also hope other providers, like Jetbrains step up to make .Net amazing on Linux and Mac. So either way this is amazing.