https://community.kde.org/Schedules/Applications/19.04_Release_Schedule#Thursday.2C_March_14.2C_2019:_KDE_Applications_19.04_Dependency_Freeze
>From this moment on it is not allowed to add new dependencies or bump >dependencies versions. It is possible to get an exception for this. Post the >patch to phabricator and add the release-team as reviewer. We will check if >the dependency is needed and is available on all platforms. In other words: If you have a feature that requires a new dependency or a version of a dependency that is higher than currently checked for in the build system, you need to have committed this change before this date. Cheers, Albert