Hi Bruce, This is still not planned for implementation. There is a workaround that you can use to import such documents. The project is for WPF but can be used in WinForms as well: https://github.com/telerik/xaml-sdk/tree/master/RichTextBox/DocFormatProviderDemo
Any status update on this, our application works with multiple legal documents, a large number of these documents are in .doc format, and support for this is highly desired.