If you were looking for good high-level info on .NET 3.0 check out following whitepapers from Microsoft:

• Introducing .NET Framework 3.0
• Introducing Microsoft Windows Workflow Foundation
• Introducing Indigo (aka Windows Communication Foundation)
• Introducing Windows Presentation Foundation
• Introducing Windows CardSpace

These whitepapers give important information for connecting business and technology with respect to .NET 3.0.