This April's Ubuntu release is not just another one of Canonical’s biannual Ubuntu releases. Ubuntu 11.04, codenamed Natty Narwhal is the first desktop version to feature the Unity user interface and the Document Foundation’s LibreOffice office suite. Both the new additions are in fact forks of the two previously used technologies GNOME and OpenOffice which were last featured on the October 2010 version.
Unity made its Ubuntu debut with the Netbook version of Ubuntu 10.10 which gave a preview of what to expect out of it. It has a lot in common with the regular GNOME environment with the major deviation being the exclusion of desktop panels and the three menus at the top. The most significant addition is the Launcher + Home button + Dash combination, which all works together to give the user an experience similar to the Windows Start menu and the task bar.

The desktop with the Launcher on the right, Home button on the top left and the top bar
The launcher icons represent running programs and these can also be pinned in similar way to the Windows task bar. Mounted drives, the workspace switcher and the Trash icon are permanent on the Launcher. Also available are the Application and the Files lenses, which are two menus quite similar to the old Applications and Places menus. The Launcher being on the left needs some getting used to provided that there seems to be no setting that can change its position on the screen.

The home button opens the Dash, the main application and file search menu
The Dash is analogous to the Windows Start menu although it takes the whole screen and is more of a window than a menu. The Alt + F2 run command and the file search are also integrated with the Dash.

The new Workspace switcher
Some new minor improvements are present in the top bar, like this one where the sound indicator menu integrates with the Banshee player, the default music player and library application. Ubuntu now has a central settings page similar to the Control panel accessible through the Session indicator on the extreme right.

The top bar also inherits the menu bar when the application is maximized. The window’s control buttons are also placed in the left of the top bar. Even if the theme places them on the right or a third party tweaking application modifies the theme, it remains in the left since the indicator menus take up the right side. This needs some getting used to if you’re accustomed to them being on the right.

Apart from these changes, the scroll bars are totally reworked to take up the least amount of space as possible and has an auto hide behaviour by default. Window animation settings are not present by default but can be accessed using the third party CompizConfig Settings Manager (CCSM) which has a wealth of other interesting settings that are not easily accessible otherwise. Another useful third party tool is the Ubuntu Tweak which is simpler and easier to use.

Ubuntu Tweak with its own Application Center
During the two days I used this version of Ubuntu I came across a few minor bugs; one with the top bar crashing, another with the mouse pointer not pointing at the exact location and another one where the Banshee player doesn’t play the selected media item. Since this is the very first release it is safe to assume that these would be fixed in the updates that are to come. I am yet to find a way to create desktop shortcuts apart from specifying the path manually. Dragging icons from the Dash results in an error referring to user privileges, which could be another small bug.
Some useful tips and shortcut keys to wrap up:
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Holding down Windows/Meta/Super key will assign numbers to Launcher icons, which can then be accessed using the keyboard. (Hitting it once reveals the Dash)
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Since the Dash opens with the focus on the search box, you can start typing to narrow the number of items displayed. Hitting Enter opens the first item.
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Alt + F2 – the Run command (in the Dash)
- Windows + A – the Applications lens
- Windows + F – the Files and folders lens
- Windows + T – Trash
- Windows + F – the Workspace switcher
- Windows + T – Expo mode (all windows from all workspaces)
- Shift + Alt + Up - Expo mode (all windows from current workspace)
- Ctrl + Alt + Shift + Arrow keys - Move the current window to a different workspace
- Ctrl + Alt + T – the Terminal
- F10 – the first Indicator menu, arrow keys to scroll through menus