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 * [Security](https://github.com/EGroupware/egroupware/wiki/Security)
 
 ### [19.1+ Installation](https://github.com/EGroupware/egroupware/wiki/19.1--Installation-using-egroupware-docker-RPM-DEB-package)
+The 19.1+ installation is based on **Docker**, even for the DEB or RPM packages.
+The only requirement for the host system is Docker and for DEB/RPM packages a recent MariaDB or MySQL.
+
+> There is no difference in most parts of the installation between **community edition** (CE) and EGroupware GmbH **EPL** version. Same is true for an in-place upgrade from 17.1 and a new installation.
+
+*19.1 is currently in release-candidate phase, and therefore in a different package repository then the old stable version 17.1. This will change, once 19.1 is officially released.*
 
 ### [17.1 Installation](https://github.com/EGroupware/egroupware/wiki/Installation)
 * [Ubuntu Installation](https://github.com/EGroupware/egroupware/wiki/Installation)