Extending WPF/E with Custom Controls

Are there any plans to enable JavaScript/XAML custom controls to be created and leveraged using WPF/E?

I'm mainly interested in encapsulating commonly used functions (say a few frequently used animations for instance) into a custom client-side control and referencing it in the XAML with an XML namespace at this point. But, I could see a future for extending existing functionality as well through custom controls if there's a way to tie into the WPF/E control.

[477 byte] By [DanWahlin] at [2008-2-28]