title: MEF vs. PRISM. What is the difference? What will be supported in the future?
body: <p>What I want to create is a Silverlight app with a few tabs/modules that will all be separate DLLs.  </p>
  
  <p>I see PRISM has the Shell/Module concepts that seem directed towards doing UI and I find a nice demo (showing how to search digg/twitter).</p>
  
  <p>But it sounds like MEF will be included in VS2010 so I would like to go with that option.</p>
  
  <p>Can anyone somehow clearly explain the differences?  (I am not a advanced programmer)</p>