Unity and accessibility -- keyboard navigation

Are there plans to add keyboard navigation to Unity?

While I can see Unity being great on a tablet, I rely on my keyboard. My biggest turn off in Unity is the lack of a keyboard command to invoke search (top left button) and the lack of keyboard navigation in the dock context menus (go up and down to select items) and in search results (enter successfully launches the first search result, but there's no apparent way to select another result or to browse the results).