Microsoft today published a post on the .NET Framework blog where they list a few examples to what new features in WPF you can expect to see in upcoming releases of Visual Studio 2015 and .NET 4.6, e.g.:
* Multi-image cursor file support in System.Windows.Input.Cursor.
* Support for transparent child windows.
* Improved double tap gesture recognition by using common threshold distance from registry.
* Improved text selection through double tapping the WPF TextBox control.
* Improved reliability of stylus input for the WPF ComboBox control.
They are also building a whole suite of debugging tools for WPF applications that will enable you to inspect the live visual tree and modify the properties of the elements while debugging.
If anyone has ever doubted this, work on improving WPF has never really stopped and they will continue to fix current security issues and bugs reported by customers that impact a large cross-section of our WPF customers.
Please refer to the following link for more information: http://blogs.msdn.com/b/dotnet/archive/2014/11/12/the-roadmap-for-wpf.aspx