Microsoft has released Microsoft Expression Blend Preview for Silverlight 5
Expression Blend Preview for Silverlight 5 provides support for creating Silverlight 5 projects, including Silverlight 5 SketchFlow projects. Expression Blend Preview for Silverlight 5 installs side-by-side with Expression Blend 4.Microsoft Expression Blend Preview for Silverlight 5
Expression Blend Preview for Silverlight 5 supports only Silverlight 5 projects. For Silverlight 3 and 4 projects or WPF 3.5 and 4, please use Expression Blend 4.
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