.Net 3……. aka Winfx….is extention of .net

2…..rather than changing .net 2 it is putting some additions like WPF,

XAML, WWF, WCS and so on for details http://www.netfx3.com

WPF….Windows Presentation foundation… cater very rich user friendly

interface.. appearence alike windows vista…. provided 2D and 3D

graphical components and so on

XAML…..Extensible Applicaiton Markup Language…..provides xml style for defining controls for Web applications

WWF…..Windows Workflow Foundation….enable

developers to create workflow enabled application…workflow depends upon

activities and activity is just unit of work

WCF….Windows Communication Foundation…..provides interface(api’s) for

distributed application…..for secure communication….net remoting;)

WCS….. Windows Card Space …next generation of

Windows Services…..:D…interface/facility/strength alike physical credit

cards/identity cards and just like that

little summary

for more details ........... http://www.netfx3.com