GNOME Shell was not included in Ubuntu 11.04 Natty Narwhal because work on it was not completed at the time 11.04 was frozen, but is available from a PPA, and is available in Ubuntu 11.10 and later releases, through the official repositories.
== Unity 2D ==В релизе Ubuntu 11.10 появился специально упрощённый вариант оболочки — Unity 2D — для обеспечения нормальной работы пользователей с устаревшими видеокартами.