Mozilla firefox : ubuntu 10.04 beta came with the latest verson of mozilla firefox 3.6 ,and the default search engine is yahoo.
Desktop : ubuntu 10.04 beta lts came with the latest verson of GNOME desktop(as default) with some new features and programs.
Linux-cernel : it has come with 2.6.32-16.25 kernel.
Hal removal : the ubuntu 10.04 came with the support of full removal of hal fr0m the booting steps,hence the boot process will become more faster and it will become easy to resume in the case of suspend.
New charming themes : Two new themes ambiance and radiance has added along with some new wallpapers and icons.
New indicators : Some indicators has added to make the notification process more consistent and well designed & optimised for session management works,communication and other tasks.
The final stable version will be released on April 29 2010.
You may like these posts :
How To Learn Ubuntu-Linux Commands
How to hack websites easily
how to hijack a tcp connection|hacking tcp sessions
credit : www.ubuntu.com