C# and MS Expression Blend Preview in Windows 8
On September 7, Microsoft announced that Expression Blend Preview for Silverlight 5 is available. MS Expression Blend Preview 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.
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.
You can download it from Microsoft downlaod center:
http://www.microsoft.com/download/en/details.aspx?id=9503