The first public release (0.8.0) demonstrates mainly the functionality of main application <-> plugins interface. This interface also provides a widget system, so it is possible to create good looking dialogs easily for any type of user input.
There are many things yet to be done. Especially new plugins would be greatly appreciated.
This project is hosted at sourceforge.net, you can find all avialble documenatation on project page (http://www.sf.net/projects/jkl)