For me, one of the compelling “WPF/E” stories is the toolset. Like WPF, the Expression toolset is meant to fully support “WPF/E”. Currently the new Expression Design (was Expression Designer) support export to “WPF/E” XAML. Expression Blend at this time doesn’t support “WPF/E” natively but with a little coaxing I have demos that show it working that i’ll be showing off soon.
The interesting bit is Expression Media which will enable Video producers to create video pre-built with “WPF/E” XAML wrappers ala SoapBox and YouTube.
For those who haven’t read it on other blogs, here’s my take on the Expression Studio tools: