Silverlight (4.0) for WPF users

For years I have exclusively worked with WPF and never touched Silverlight. Is there a quick tour for WPF pros that introduces me to Silverlight (4.0) its uniq开发者_C百科ue features and its differences to WPF?

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pls, see if links below would be useful for you

Contrasting Silverlight and WPF

Silverlight 4 Beta Information

Silverlight Architecture