The most important visible features are:
1. Support for images in SVG, PNG, GIF and JPG format
This means that is just a matter of creating a new set of images and you have a new package of figures.
2. Network diagram support

3. UML state machine diagram support

3. Real time changing in connector shape
For those interested in developing there were huge changes in the core of the application, mainly making the code cleaner and unclutter the UNDO system.
You can see resolved tasks or download it.
Please visit http://beta.diagramo.com to test these new features and report any bug you might find.
With your help I can push this version into release.
Thanks and enjoy
Alex