We have released version 5.3.5 of FlowChart.NET. It adds support for .NET 4 and implements several customer requested features:

Support for .NET 4
The package now includes a .NET 4 version of the MindFusion.Diagramming assemblies, available in the VS2010 subfolder of the installation folder. These assemblies can also be used in applications that target the .NET 4 Client Profile. The VS2010 folder also includes sample projects for Visual Studio 2010. Versions 2 and 3 of the .NET runtime are still supported.

Miscellaneous
~ The Toolbox Installer tool can be used to automatically add the MindFusion.Diagramming components to a tab of the Visual Studio toolbox.
~ The Id property added to DiagramItem allows assigning custom identifiers to items. It can also be used to just store additional custom data similarly to Tag.
~ Call FindLinkById and FindNodeById to find items by their Id.
~ Shadows can be painted using any brush type and not only in solid color. The ShadowColor property has been replaced by ShadowBrush.
~ The FoldedContainerSize property allows setting the size of folded containers to be larger than their caption bar.
~ ShapeNodes whose Brush is set to a PathGradientBrush instance now use a gradient path corresponding to their Shape instead of a rectangle.

Registered customers with an active upgrade subscription can download the licensed version from the clients area on our site.
    
A trial version is available for download here: 
https://www.mindfusion.eu/FCNetDemo.zip
    
Enjoy!