XBMC Eden , latest release of Award winning free and open source software media player is available in official Ubuntu 12.04 repositories . Hereafter for installation, you can install through Ubuntu software centre in spite of installing through third party PPAs.
It happened because of XBMC and Debian developer Andres Mejia , who integrated XBMC eden with Debian .
For more info : http://xbmc.org/theuni/2012/04/10/xbmc-accepted-into-debian/
Excerpt from XBMC Blog :
Linux users rejoice! Thanks primarily to the hard work of Andres Mejia, XBMC has been accepted into the official Debian distribution! In the past we have been unable to make it into Debian as the sheer size and complexity of XBMC made the review process so difficult, so Andres, an XBMC developer who was working to become a Debian Developer already, volunteered to maintain it himself. Yesterday, his Eden packages were accepted. For those unclear about what this means, Debian unstable users will now be able to install XBMC without using any third-party repositories.
We have already been included in several major Linux distributions, but Debian is a big target because of the size of the community around it. As most Linux users are probably aware, other major distros such as Ubuntu and Mint derive (or derive indirectly) from Debian, and sync their packages regularly. Andres succeeded in requesting a sync to Ubuntu in time to hit Precise Pangolin, so users of this next LTS release will be able to install XBMC with just a few clicks (or an apt-get). We hope this will lower the barrier to entry for many users who are not familiar with PPAs.
Note : You can also install XBMC eden through command line in Ubuntu 12.04 . To install it , go to terminal and run the following command :
sudo apt-get install xbmc
