As already mentioned in a previous post, MSDN Premium subscribers are now entitled to use the full Expression Studio 3. So in addition to Expression Blend 3 and Expression Web 3, you can prototype application interfaces with SketchFlow, design graphics with Expression Design 3 and prepare video for Silverlight and devices with Expression Encoder 3. Expression Encoder 3 also includes a screen capture application for creating tutorials and documentation.

Access the Subscriber Download center and within the Designer Tools section you will find Expression 3 (Expression Studio 3).