Ubuntu 11.04 Brings New Unity UI
Ubuntu 11.04 or Natty Narwhal, is now here and packing the significant changes from earlier editions of the Linux distro. The most obvious is arrival of Unity desktop environment, which was relegated to netbooks. It got integrated search, a combination launcher and taskbar, and app menus that have been moved to the top of the screen basically it is harvested the best ideas from Apple and Microsoft and splashed pretty coat of aubergine paint on it.
The UI is not without detectors and reportedly has some stability issues that you can always choose Ubuntu Classic to be with GNOME. The update also makes Firefox4 default browser and replaces Rythmbox Music manager with more functional Banshee. For your free versions of Ubuntu 11.04, click on the source link and download 700MB ISO and you can try it without installing.