NzbDrone v1533 - Added SPK compatibility for built-in NzbDrone updates!

SPK now versioned by date for multi-branch and built-in NzbDrone updater compatibility - SPK upgrade now retains current NzbDrone binary (avoids potential binary downgrade) when necessary
Didn't know that. Do you happen to know for which version that was introduced?
Package only runs on DSM5+ (well, officially at least), but as you say, no harm.