In this post Kirupa Chinnathambi discusses in a bit more detail
some of the new features of Expression Blend 3 + SketchFlow. There are a lot of new features in Expression Blend 3, so this article is split into two parts. Read the first one now.
With SketchFlow, Expression Blend 3 introduces a new set of features designed to make it easier for you to experiment with dynamic user experiences and to create compelling prototypes. Christian Schormann has blogged extensively about this, so please read the following posts for more information: SketchFlow Concepts: An Overview, Sketching and Prototyping in Expression Blend.