Naturally, the big news today is the release of Silverlight 4 beta at today’s PDC.

You can download it right now. Go ahead, start the download now. I’ll wait.

Shawn Wildermuth has a nice high level wrap up post:

• Printing Support
• Implicit Styling
• WebCam/Microphone Support
• RichTextArea Control
• Right-Mouse Button Events
• Drag-n-Drop/Clipboard Access
• UDP/Multicast Support in Networking
• Elevated Trust
• WebBrowser Control
• Controlling the Window
• Notification Windows (e.g. Outlook popup's)
• COM Integration
• Binding to DependencyObjects (used to be FrameworkElement)
• StringFormat Markup Extension
• TargetNullValue Markup Extension
• FallbackValue Markup Extension
• Support for IDataErrorInfo and new INotifyDataErrorInfo for reporting validation errors.
• Binding to String Indexers
• GroupDescription support on CollectionViewSource for simplified grouping.

If you want to dive deeper into any of the new features, check out Tim Heuer’s post.

It’s a must-read.