It looks like the core Silverlight 3 tools are now available:

• Microsoft Expression Blend 3 + SketchFlow RC
• Microsoft® Silverlight™ 3 SDK
• Microsoft® Silverlight™ 3 Tools for Visual Studio 2008 SP1
• Deep Zoom Composer

Though the tools needed for development seem to be public, I’ve yet to see the end-user run-time; though I imagine we’ll see that in the release anticipated for tomorrow.

Time to have some fun.

Update: Client run-time is now available.