The Microsoft .NET Framework 3.0 (formerly WinFX), is the new managed code programming model for Windows. It combines the power of the .NET Framework 2.0 with four new technologies: Windows Presentation Foundation (WPF) Windows Communication Foundation (WCF) Windows Workflow Foundation (WF) Windows CardSpace (WCS, formerly 「InfoCard」) For more info visit Microsoft's .NET Framework 3.0 Community: NetFx3, Download