The code names with which MS has built the latest .Net 3.0 is :
1. Avalon --WPF --Windows Presentation Framework.
2. Indigo -- WCF -- Windows Communication Framework.
3.Aero -- Windows Aero is the name of the new graphical user interface and style used in the new Windows operating system called "Windows Vista". AERO is an acronym for Authentic, Energetic, Reflective and Open.