Recently in an official .NET Framework Blog it was announced that .NET Core is going open source.
Ironically, the author mentions that what .NET Core is will be explained in the next post. Some more details are mentioned in another announcement post.
From a supplied diagram:
and articles text itself, I would assume that .NET Core (beside obvious things like being open-sourced) is a modular re-implementation of the full .NET. I.e. framework components are loaded as necessary, much like NuGet packages are loaded now. And now ASP.NET 5 is one of the modules that is already implemented. Is my understanding of .NET Core correct? Maybe I’m missing something?
I have found a recent article which I found both short and very good. It covers .NET Standard, .NET Core, and .NET Framework and their relationship. I highly recommend it.