Cononical will launch a new version of Ubuntu 3 Day From now, are you ubuntu Holic, find out What's New in Ubuntu 11.04 Natty Narwhall here ..

Kernel and Core
In order to improve performance of Ubuntu , Canonical going to incorporate Linux kernel 2.6.38 in their new version of ubuntu 11.04 Natty Narwhall.Recently the patch has been incorporated in the kernel 2.6.38 which increased  the performance of the Linux kernel across desktops and workstations.
Ubuntu development Roadmap

Desktop Enviroment
In this new version Ubuntu will not use GNOME as default desktop enviroment, although GNOME has launch their GNOME3. Unity as been confirmed as default for Ubuntu 11.04 – desktop edition, the desktop version will use the global menu (AppMenu).

Ubuntu 111.04 Natty Narwhall Desktop Screenshoot
Office Application
Regarding to Office (word preccessor), Since Oracle bought Sun Microsystems, many doubts were raised about the future of Openoffice, as Oracle is a name which the Free Software community was reluctant to trust. This polarization led to forking of Openoffice.org, thus giving birth to a new project called Libreoffice.Ubuntu 11.04 Natty Narwhall will use Libre Office as Defaut Word Proccessor replace Open Office which is always used in their previous version of Ubuntu.

LibreOffice Foundation Logo
Regarding to Push Mail Application, Ubuntu 11.04 will launched with Thunderbird as default push mail application. Hopefully Thunderbird will be ready in a cycle or two (it misses a calendar, exchange support, integration with appmenu and messaging menu).
 
Internet Browser
The Natty Narwhall come with Firefox 4, Firefox is still favored over Chrome as the default browser in Ubuntu. Chrome still poses too many challenges for Ubuntu (the release cycle doesn’t fit well with Ubuntu Update model and also there are issues with the Global Menu integrations and so on).

Music Player
 
If you ever try banshe, this music player will be included by default in Ubuntu 11.04 (and thus replace Rhythmbox). Banshe give more advantages that previous music player, Banshe give Amazon Mp3 support , Video support, Audiobooks support for library & Metadata which Rhythmbox doesn’t has. Good bye Rhythmbox..

Software Center
The Software center was one of the major highlights of Ubuntu Jaunty. Also, it was a new feature which is very interesting, among others.. 
  • Ubuntu Software Center will eqquied with Ratings and reviews which allow ther user to choose (control) the best applicaton to be installed. Ratings and reviews are a way for Ubuntu users to communicate with other Ubuntu users about software. They are not specifically a means of communication with Ubuntu developers or application developers.
  • Michael Vogt from Ubuntu development team showed off a really cool feature on his blog today that allows you to test drive an application from software center without actually installing it.
Ubuntu 11.04 Software Center
 Apple’s Mac App Store comes with features like ratings and reviews, which Ubuntu Software Center does not yet possess. Therefore, keeping up with the competition, ratings and review will be a part of the Software store in Natty.

New Interface of Ubuntu One
The new look ‘Ubuntu One Dashboard’ is included by default in Ubunt 11.04 Natty Narwhall. Ubuntu One is the Ubuntu’s attempt at integrating the desktop with the cloud. Ubuntu One provides an sample 2GB of space for keeping one’s files on the cloud; however, it is meant to do much more than that. Ubuntu One aims at providing a seamless experience for users so that they could access their contacts, notes, or bookmarks from any computer with an internet connection. 

Ubuntu One New Interface
A Qt beginning
Ubuntu 11.04 will feature a 2D interface for better compatibility with low-end graphic cards. The UI part of the 2D desktop is implemented using Qt/Qml. Moreover, users can expect Qt-based applications with multi-touch capabilities on platforms like ARM, Nokia, Android and even iphone.