We have just released JDiagram V2.1. It contains the following new features:

~ Orthogonal graph layout algorithm
~ Circular graph layout algorithm
~ mergeUndoRecords() lets you merge multiple undo records into a composite one
~ setExpandButtonPosition() sets the position of collapse/expand icons
~ support for in-place editing of link labels

An evaluation version is available for download here: 
https://mindfusion.eu/JDiagramTrial.zip ;   
    
Registered customers are going to receive their upgrades shortly.      
    
Enjoy!