The first beta version of Ubuntu 16.04 LTS (Xenial Xerus) has just been released. As we mentioned in this morning's post the distribution developers have stopped adding new features, and are working on optimizing what they added in the new version. 
The new Ubuntu 16.04 LTS distribution is released via cdimage.ubuntu.com and comes with a new kernel (linux-4.4.0-7.22), which is obviously based on the upstream Linux kernel 4.4.2 LTS (Long Term Support) announced by Greg Kroah- Hartman on 17 February of 2016.
We should mention that in addition to the 4.4.2 kernel, the new Ubuntu 16.04 LTS (Xenial Xerus) has many other important updates, such as the latest version of the office suite LibreOffice 5.1. Also, the application GNOME Software is installed by default leaving Unity's Software Center behind.
Download the ISO you are interested in:
xenial-desktop-amd64.iso 24-Feb-2016 07:58 1.2G desktop image for 64-bit PC (AMD64) computers
xenial-desktop-i386.iso 24-Feb-2016 08:27 1.5G Desktop image for 32-bit PC (i386) computers
MD5SUMS, SHA1SUMS, and SHA256SUMS
Interested in Gnome Flavor?
http://cdimage.ubuntu.com/ubuntu-gnome/daily-live/pending/
