Version 3.5.4 of WPF Diagram control contains the following new features and improvements -

DXF Exporter
DxfExporter exports diagrams to AutoDesk Drawing Exchange Format (DXF) files. In order to use this component, add a reference to the MindFusion.Diagramming.Wpf.DxfExport.dll assembly to the project. To create a DXF file from a diagram, create a DxfExporter instance and call its Export method, specifying a Diagram object and a file path as arguments.

Miscellaneous
~ improved rendering performance for large diagrams;
~ ModificationEffect.MoveShades now supported for nodes with custom templates;
~ LayeredLayout.LinkPadding is now applied for all link types;
~ RerouteLinks.Never flag is now considered by multiple selection;
~ fixed ExcelExporter exception when exporting multi-page documents;

If anyone is interested in trying the beta version, please download this archive containing updated assembly files -
https://mindfusion.eu/_beta/wpfdiag354.zip

Any comments, questions and general feedback are welcome.