For those who are looking for more WPF functionalities, there is a "project" on CodePlex called: Windows Presentation Foundation (WPF).
"This project is the portal for accessing the WPF Toolkit and the WPF Futures releases.
The WPF Toolkit is a collection of WPF features and components that are being made available outside of the normal .NET Framework ship cycle."
It contains controls like: DatePicker, Calendar, DataGrid, VisualStateManager.