UPDATE 2011-12-12
Perhaps you are asking what is the current status of this, so I give you this quick resume:
1. The current development is in half state, meaning that the Filemanager probably won't be launched this year.
2. I have added more features to the UI, currently I'm dealing with the keyboard shortcuts function.
3. There is a ton of cool JS functions that has been developed for this, like automatic resize calculator and contextmenu options.

Hope you can understand that I'm polishing this to the very bone and that it will take more time to release it.