In case you have missed this recent announcement? .NET Core 2.0 is now generally available.
What is .NET Core?
it is a cross-platform, open source, and modular .NET environment for creating modern web apps, microservices, libraries and console applications that run everywhere. This release focuses on performance improvements and expanding the set of APIs available via the .NET Standard 2.0 spec. The release includes the runtime and libraries for .NET Core as well as the tools for building, debugging and running .NET Core applications. This tooling includes a new set of command line tools, as well as Visual Studio and Visual Studio for Mac updates that enable developers to work with .NET Core 2.0 projects.