Technically, you have version 2.0.0.0 of the Windows Forms API, defined in the System.Windows.Forms.dll assembly.
If you're using .NET 3.5sp1, it will have the runtime version v2.0.50727, but it is still the 2.0.0.0 API.
Windows Forms is not receiving the same new development it did prior to VS2005/.NET 2.0, since Windows Presentation Framework has come onto the scene as the new UI framework. Windows Forms is still receiving bug fixes with new versions of the .NET framework, but not new features.
Reed Copsey, Jr. -
http://reedcopsey.com