http://blogs.technet.com/b/port25/archive/2009/07/10/silverlight-3-hits-the-street.aspxby Peter Galli on July 10, 2009 04:19pm Microsoft Silverlight 3 is now available for download , as is the Release Candidate for Expression Blend , while the associated Expression 3 tool suite will be available within 30 days. This media and rich Interneten-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)