Silverlight Beta 2 has released

http://silverlight.net/forums/t/17337.aspx

Newly Updated!

• Important! Migrating Older Code to the Newer Release
• Update Silverlight.js
• Sockets Breaking Change
• Change for Built-In Style of Controls
• MIME Type and Installer URL Change
• SetTargetProperty and GetTargetProperty Changes
• System.Windows.Control.dll Merged with System.Windows.dll
• ToolTip Changes
• Removed Several Properties from Controls in System.Windows*dll
• Change in Handling of System.Windows.Controls.Extended.dll in XAML
• Changes to HtmlElement.GetAttribute and HtmlElement.GetProperty
• Calendar/DatePicker Changes
• HtmlPage.UnregisterScriptableObject Removed
• WebClient and HttpWebRequest Changes
• Improved Null Argument Checking in System.Xml
• BackgroundWorker Moved
• Deep Zoom Image and Collections Format Change
• MultiScaleImage Change
• AllowInboundCallsFromXDomain Changes
• Changes to Scroll-related APIs and Drag*EventArgs
• Glyphs Element Requires Either UniCodeString or Indices Attribute
• ItemsControl.Items Is Now of Type ItemCollection Instead of IList
• RoutedEventArgs.Handled=true Events No Longer Bubble
• Style Cannot Be Applied to Control That Is Incompatible with Its TargetType
• SetValue Only Accepts the Correct Types (No Conversions)
• Control.InitializeFromXaml Removed
• No Longer Can Specify Name and x:Name on the Same Element
• Changes to Cross-Domain Policy
• Storyboards Can Be Active While Outside the Live Tree
• GetValue on Storyboard.Duration Only Returns Storyboard.Duration
• Image and ImageBrush Class Changes
• TextBox Template Changes
• Custom BorderBrush/BorderThickness Change
• ButtonBase Changes
• ListBox and ListBoxItem Changes
• ContentControl and ContentPresenter Changes
• GetValue Changes
• Updates to Control Styles
• Miscellaneous API Changes