p@rdus established another Hudson based continuous integration setup in preparation of the first experimental Horde4 packages in two weeks. The new system bundles Horde4 packages for the Kolab-Server-2.2.4/OpenPKG and lives here.
Packaging the Horde4 source code for a distribution is nearly trivial as the basic Horde packages are already continously integrated and packaged as PEAR modules. Because of that it is likely that p@rdus will establish a similar process for the native Kolab-Server/Debian.
With Kolab currently planning to move away from OpenPKG it is also possible that p@rdus makes the native Debian port the primary supported platform for Horde4 on Kolab in the future.