Just listening to TheGu announcing the official release of Silverlight 2.0 RTM together with the full stack of development tools, including an Express version of the tool, and Soyatec, a plugin to build Silverlight application inside Eclipse (available next year).
Furthermore, they will be releasing a Silverlight Control Pack on Codeplex, that include a pack of controls that will follow a fast iteration process.
Everything will be available from tomorrow, October 14th.
More info on Microsoft Press Pass: Microsoft Releases Silverlight 2, Already Reaching One in Four Consumers Worldwide
UPDATE: They will porting Silverlight to Symbian teaming up with Nokia