As you may know, Canonical freezes software packages a few weeks before a new distribution comes out.
Only security updates will be installed after the freeze.
If you want new fectures for your software, you need to install a ppa.
To add a repository on your system the new way (9.10 and higher) all you do is “sudo add-apt-repository ppa:jonoomph/openshot-edge”
This article was writen for Ubuntu 10.10. You may not need all 9 repositories listed here on newer systems.
 
1: Chromium - Stable: ppa:chromium-daily/stable [10.04+]
2: Firefox - Stable: ppa:mozillateam/firefox-stable [10.04+]
3: Thunderbird - Stable: ppa:mozillateam/thunderbird-stable [10.04+]
4. Openshot - Bleeding Edge: ppa:jonoomph/openshot-edge [9.10+]
5. LibreOffice -Stable: ppa:libreoffice/ppa [10.04+]
6. The Gimp - Trunk: ppa:matthaeus123/mrw-gimp-svn [9.04+]
7. Pidgin - Stable: ppa:pidgin-developers/ppa [10.04+]
8. Shotwell - Stable: ppa:yorba/ppa [8.04+]
9. WineHQ - Stable: ppa:ubuntu-wine/ppa [6.06+]