MEF is included in .NET4 Client Profile
Includes new .NET 4 features (such as Managed Extensibility Framework (MEF), C# 4 Dynamic Keyword, etc)
via blogs.msdn.com
Random thoughts and ramblings
Includes new .NET 4 features (such as Managed Extensibility Framework (MEF), C# 4 Dynamic Keyword, etc)
We recommend that the NET4 Client Profile be utilized as the primary framework for most client desktop applications (including Windows Forms and WPF apps).