I am using Visual Studio 2010 and I wanted to upgrade to Silverlight 5. According to the ArcGIS Resources: http://resources.arcgis.com/en/help/silverlight-api/concepts/index.html#//01660000000t000000 I need to install Expression Blend Preview for Silverlight 5, which does not exist on Microsoft website anymore. Does anyone know from where I can download it or have some experience with working in Visual Studio 2010 without it? Thank you!