What's new in WPF 4.5

Here are some new features of WPF in WPF 4.5 that is also a part of Visual Studio 2012
  • Ribbon control
  • Improved performance when displaying large sets of grouped data
  • New features for the VirtualizingPanel
  • Binding to static properties
  • Accessing collections on non-UI Threads
  • Synchronously and Asynchronously validating data
  • Automatically updating the source of a data binding
  • Binding to types that Implement ICustomTypeProvider
  • Retrieving data binding information from a binding expression
  • Checking for a valid DataContext object
  • Repositioning data as the data's values change (Live shaping)
  • Improved Support for Establishing a Weak Reference to an Event
  • New methods for the Dispatcher class
  • Markup Extensions for Events
Detailed features are discussed here >