The licensed version has notifications about updates in the UI, and has a GUI updating tool. Free or community versions do not.
All versions have the capability to be updated through the command line, using various methods, among them zypper, ssu, and the sfos-update script.
Note that while community versions (ports) may be updated in theory, some of them do not offer a current version. So while the tools are there, the software packages may not be available.