While it's not too difficult to get your own package within Ubuntu's universe repository, it's more difficult to get a Debian package promoted to be within Ubuntu main, or the main repository that is officially supported by Canonical. However, the Ubuntu development community has decided to make that process a bit easier by eliminating some of the hurdles imposed when a package is initially rejected from being pushed into the main repository. Clarifying main package concerns used to require writing lengthy Wiki page entries, but now it's much more concise, simpler, and should be easier on everyone involved in the process.
The change regarding getting Debian packages into the main Ubuntu repository can be found in the announcement on ubuntu-devel-announce
. The actual steps can be found on the Ubuntu Wiki via their inclusion requirements
and inclusion process