Although Silverlight 2.0 is biting WPF in its tail, and Microsoft promotes Silverlight 2.0 for future LOB applications, and that Silverlight is planned to go out-of-prison (browser), there is a nice plan for WPF 4.0. I'll start by saying that few controls such as the long awaiting DataGrid , Calendar and DatePicker controls are now released, and you can download the toolkit from here . There is a new cool WPF Ribbon control which is currently CTP, and you can also download it from here . * In...