Here is a sneak preview of the latest results: http://youtu.be/9ElaRE8geJU (video play 5x faster than real-time).
This is an interactive navigation in the camera menus using virtual buttons. It still requires some magic tricks, but as you can see, the menus react as expected, and "hardware" JPEG decoding is implemented, allowing among other things the modern info screen to be rendered, as well as the TimeZone selection.
This helps us understand what code is related to what camera feature...
The NikonHacker Team