Some "Avalon" goodness...
I thought I'd put up a few good reads:
Mapping PIs are going away in the next CTP. Rob promises to post a tool to help convert your apps. (In the next CTP, the RichTextBox stuff will start working.)
Rob talks about Attached Properties and Markup Extensions XAML.
Charles Petzold talks about the ContentPropertyAttribute.
The Cider team is looking for sample applications using styles, templates and resources. If you've got an application you think we should look at drop me a line.