Ubuntu 11.10 Alpha 1 with code name “Oneiric Ocelot” has been released comes with Gnome 3 desktop also comes with Unity 2D instead of classic Gnome desktop incase you don’t have enough hardware specifications for your machine.
This version is not recommended to use in a production machine
Some of the key packages making their first appearance with this Alpha 1 release are:
Unity taking place with many gnome 3 applications like Nautilus file manager and gedit text editor. By default Ubuntu 11.10 don’t comes with Gnome shell but you can install it if you want
Gnome shell already available on Ubuntu 11.10 repository so you are not have to add extra repository simply run this command on the terminal.
sudo apt-get install gnome-shell gnome-session
Download Ubuntu 11.10 Oneiric Ocelot Alpha 1
Ubuntu 11.10 Alpha 1 Desktop i386 – Torrent
Ubuntu 11.10 Alpha 1 Desktop AMD64 – Torrent
Ubuntu 11.10 Alpha 1 Server i386 – Torrent
Ubuntu 11.10 Alpha 1 Server AMD64 – Torrent
Ubuntu 11.10 Alpha 1 Release announcements
Also check Release Notes for more informations and download options for Kubuntu, Xubuntu and Edubuntu.