Ubuntu is a Linux distribution for desktop and server, with a fast and easy install, regular releases(6 month cycle), a selection of excellent packages installed by default, every other package you can imagine available from the community, and professional technical support from Canonical Ltd. and hundreds of other companies around the world.
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Ubuntu,Kubuntu,Xubuntu,Edububtu 10.04 LTS Release Schedule :Linux 2u
December 3rd, 2009 - Alpha 1 release;
January 7th, 2010 - Alpha 2 release;
February 4th, 2010 - Alpha 3 release;
March 4th, 2010 - Beta 1 release;
April 1st, 2010 - Beta 2 release;April 15th, 2010 - Release Candidate;
April 29th, 2010 - Final release of Ubuntu 10.04 LTS(Lucid Lynx).
Whats New will be in th release?
> Default Super fast EXT4
> Possible Gnome 3
> New Theme & Icons.