Hi,I would prefer to keep Qt 5.12 supported, but maybe explicitly the latest patch release, i.e. 5.12.4 or so. Quickly skimming through the changelogs of Qt 5.13 I don't see any groundbreaking new features that I would want to use.
The Frameworks Qt requirement policy [1] was also updated recently to accomodate distributions better since there are Qt LTS releases now.
Cheers Kai Uwe [1] https://community.kde.org/Frameworks/Policies#Frameworks_Qt_requirements
