Ubuntu

Steve Langasek has announced the availability of the first beta release of Ubuntu 10.04, code name “Lucid Lynx”, a long-term support (LTS) version: “The Ubuntu team is pleased to announce the first beta release of Ubuntu 10.04 LTS Desktop, Server, and Netbook editions and of Ubuntu 10.04 Server for Ubuntu Enterprise Cloud (UEC) and Amazon’s EC2. Ubuntu 10.04 LTS Desktop and Netbook editions continue the trend of ever-faster boot speeds, with improved start-up times and a streamlined, smoother boot experience. Ubuntu 10.04 LTS Server edition provides even better integration of the Ubuntu Enterprise Cloud, with its install-time cloud setup.” Read the release announcement and release notes for further details. Download (SHA256): ubuntu-10.04-beta1-desktop-i386.iso (675MB, torrent), ubuntu-10.04-beta1-desktop-amd64.iso (679MB, torrent). Also release today were 10.04 beta 1 builds of Kubuntu (download, release notes), Xubuntu (download), Xubuntu (download), Edubuntu (download), Mythbuntu (download, release announcement) and Ubuntu Studio (download).

Desktop features
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Social from the start:  We now feature built-in integration with Twitter,
identi.ca, Facebook, and other social networks with the MeMenu in the panel.

New Design: Cleaner and faster boot, new notification area, new themes, new
icons, and new wallpaper bring a dramatically updated look and feel to
Ubuntu.

Ubuntu One: Choose any folder in your home directory to sync, choose from
millions of songs for purchase in the Ubuntu One Music store.

Please see http://www.ubuntu.com/testing/lucid/beta1 for details.

Server features
---------------

Cloud computing:  The Ubuntu Enterprise Cloud installer has been vastly
improved in order to support alternative installation topologies. UEC
components are now automatically discovered and registered, even with
complex topologies. Finally, UEC is now powered by Eucalyptus 1.6.2
codebase.

UEC and EC2:  Ubuntu 10.04 LTS continues the tradition of official Ubuntu
Server image releases for UEC and for Amazon's EC2, giving you everything
you need for rapid deployment of Ubuntu instances in a cloud computing
environment. UEC images, and information on running Ubuntu 10.04 on EC2, are
available at:

  http://uec-images.ubuntu.com/releases/10.04/beta1

Stability and security:  Ubuntu 10.04 LTS brings many improvements over
Ubuntu 8.04 LTS to keep your servers safe and secure for the next five
years, including AppArmor profiles for many key services, kernel hardening,
and an easy-to-configure firewall.

Ubuntu Netbook features
-----------------------
Ubuntu Netbook Edition is optimised to run on Intel atom based netbooks. It
includes a new consumer-friendly interface that allows users to quickly and
easily get on-line and use their favourite applications. This interface is
optimised for a retail sales environment.

It includes the same faster boot times and improved boot experience as
Ubuntu desktop.

Referance:https://lists.ubuntu.com/archives/ubuntu-announce/2010-March/000129.html