As brion’s earlier post stated, the new set of usability features (nickname: Babaco)are integrate into the source code but disabled until these features are stable. New features include, navigable table of contents and content generation dialogues for links, tables, search and replace. These features are currently staged on the usability prototype environment, and you are welcome to check them out and encouraged to push them hard to find bugs. :-)
We are also hoping to integrate add-media-wizard created by Michael Dale in Babaco. While API to extend the toolbar is being worked on, media import functionality can be played at the usability sandbox environment. Click the “Edit” tab and click an image gallery icon in the toolbar. You will see a nice media import function there. Feel free to create an article and import image from Commons using this neat feature.
Naoko Komura, Project Manager, Usability Initiative