Scott Guthrie went in to demo mode and uncovered some of the features of the new cross platform CLR...
Here's a list of features:
You can code in VB.NET, C# and other CLR languages
Will contain assemblies of WPF Controls (light version)
Contains a number of namespaces I think I saw 10+ including Threading, LINQ, Web, Text, IO and others.
You can link into web services using standard .NET Web References.
And something really cool... You can attach to Silverlight Processing running on a MAC!!!!!
And item of real interest.... Scott installed the Silverlight engine on a clean machine right in front of us. The size of the download was around 5MB.....
Hope you found this interesting.... I'll blog when I have more details later on in the conference.re
UPDATE: The SDK for VS.NET is available too http://www.microsoft.com/downloads/thankyou.aspx?familyId=c744cbb8-d4d9-4bf9-ad5c-eef36e064911&displayLang=en