Just posted the first four Web seminars in a new series about Windows Presentation Foundation 4! Each session is short (10-20 minutes) and focuses a feature or two of WPF 4. Here are the links to the individual sessions, each with source code you can download if you’d like:

• New Windows Presentation Foundation Controls [code]
• The Visual State Manager[code]
• Touch comes to Windows Presentation Foundation[code]
• Graphics Enhancements[code]

Cheers!