Shiro Project
We started to developing a tablet user interface based on gnome-shell
...We took the source code of the gnome-shell and started to adapt it on touchscreen devices. Up to now we stayed fully compatible with the gnome-shell extension system. At the moment the software works just for the gnome-shell 3.2 shipped with Fedora 16 but we should adapt it for Ubuntu's gnome-shell version as well as for the newest releases of the gnome-shell.
For the next steps we hope that we can integrate more social networks in the UI.