1: Silverlight re-announcement (microsoft.com/silverlight)
2: It now comes with a .NET redistributable (that it’s in alpha – groan!)
3: Silverlight Streaming – A free hosting/streaming service for people to delivering Silverlight solutions

The good news, Microsoft Expression (microsoft.com/expression) is also now released (except the Media Encoder I believe)

The bad news, is that while there’s a Silverlight kit for Visual Studio, it’s for VS Orcas which is still in beta.

UPDATE: See my updates with the Mix07 for various updates and comments.