Kate Stewart mengumumkan ketersediaan rilis alpha pertama Ubuntu 11.04, code name “Natty Narwhal”:
Natty Narwhal is doing a first bit of spy hopping, also known as alpha 1, which will in time become Ubuntu 11.04. New features include Unity as the default user interface: Unity is now the default in the Ubuntu desktop session. The Unity Launcher is now available; it can be used to launch applications that are pinned to the launcher and switch between running applications. It supports quick lists on context menu. It can be set to auto-hide. Places is not yet available in alpha 1. Clicking the Ubuntu logo in the upper left of the screen will open the applications directory.
Juga tersedia build alhpa pertama versi 11.04 :