Hello Bastien & Carsten, I have proposed that the org-odt tarball be included in http://elpa.gnu.org/packages.
Feel free to track the below thread: http://lists.gnu.org/archive/html/emacs-devel/2011-06/msg00420.html or pitch in as you deem fit.. With this, I am moving org-odt and the accompanying org-html changes to purely maintenance and bug fix mode for foreseeable future. Jambunathan K. --