Expression Blend™ Preview for .NET 4 enables customers to use Expression Blend to test the latest Beta platform releases from Microsoft.
Expression Blend Preview for .NET 4 creates and modifies Silverlight 4 Beta and .NET 4 Beta 2 based applications. Please note that Expression Blend Preview for .NET 4 does not include support for Silverlight 3, .NET 3.5 or SketchFlow, please continue using Microsoft Expression Blend 3 to target these platforms.