New versions of Microsoft's two forthcoming WPF-centric "designer" producst from the expression range were relesed yesterday. Expression Blend (formerly known as Expression Interactive Designer, formerly known as Sparkle) is a Xaml design tool focused towards graphic and interaction designers. Yesterday's release is the first beta version of this product. Expression Design (formerly known as Acrylic) is a graphic design tool for creating vector and bitmap assets. It is primarily of interest to WPF aficionados due to its Xaml export capabilities. This is the December CTP of Expression Design.