No specific info about version 2.2. Please visit the main page of Property List Editor on Mac Informer.
Info updated on:
Helps you create and edit property list files (.plist).
A simple solution that allows users to edit plist files on their Mac.
Graphical editor for launchd’s property list files.
Allows to inspect, create and modify Genealogy Data stored in GEDCOM standard.
Helix Server preferences are stored in an XML formatted plist.