Microsoft responded to a questions about "whether .NET Framework 4 will be available on Server Core," -- in this regard, Microsoft announced that "in Q1 of 2011, there will be a release of .NET Framework 4 supporting installation on the Server Core installation option. This will require Windows Server 2008 R2 SP1, which has publicly been stated to release in Q1.
Like in .NET 2.0 and .NET 3.5, with .NET Framework 4, you will be able to build and run managed applications that use ASP.NET, WCF, WF, Windows Services and Console Applications."
Those not familiar with the Server Core installation need to know that Microsoft allows customers to install the bare minimum components of Windows Server to perform specific actions while benefitting from such advantages as a considerably reduced attack surface.
"Server Core is a minimal server installation option for computers running on the Windows Server 2008 operating system or later. Server Core provides a low-maintenance server environment with limited functionality," Microsoft reveals.