The Managed Extensibility Framework (MEF) is offered as a new library for .NET Framework 4. Developers can leverage MEF in order to build extensible applications while enjoying a streamlined maintenance process. It is important to note that Preview 6 of the Managed Extensibility Framework is the feature-complete library designed to kick up a notch the level of reuse of applications and components. Microsoft plans to include MEF version 1.0 in the final version of .NET Framework 4. “I’ve summarized the biggest changes between the Preview 5 and Preview 6 releases. The highlights are: Silverlight support; Lazy<T> replaces Export<T>; Collection import changes; Inheritance changes; Export attribute is unsealed; Stable Composition makes its debut,” revealed.
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