Here comes a quick overview on recent updates to Kolab 16 packages.
Please note: I am only using public information. I have no background knowledge about the releases.
Today, the roundcubemail package has been updated from version 188.8.131.52 to 1.3.3. This fixes a security issue, described in https://roundcube.net/news/2017/11/08/security-updates-1.3.3-1.2.7-and-1.1.10. Also see the release notes https://roundcube.net/news/2017/09/04/update-1.3.1-released and https://roundcube.net/news/2017/10/31/update-1.3.2-released for new changes.
Because of this, the packages iRony, kolab-freebusy and kolab-syncroton have been rebuilt as well.
In the past days, erlang-eimap has been updated with a patch for untagged commands. Because of that, guam has also been rebuilt. For details see https://obs.kolabsys.com/package/rdiff/Kolab:16/erlang-eimap?linkrev=base&rev=8