I’ll stay in the holdout line. When M$ actually refines this technology to the point where it has any value in line of business applications I may climb on board. Right now the only thing WPF will do for my shop is ensure that we get half as much done in double the amount of time. When WPF has full designer support and is as easy to use as winforms then I may jump ship. When it allows me to code faster I may jump ship. I see no value for WPF in line of business applications.