https://channel9.msdn.com/Events/dotnetConf/2016/NET-Conf-Day-1-Keynote-Scott-Hunter
for those who does not want to watch the full video .NET standard- One standard library across all the platforms full .net framework,Xamarin,.NET Core c#,vb.net and F# support standardise tooling across xamarin,VS code and VS- msbuild (project.json will be merged with csproj)