The PropertiesUpdated event (that implements IPropertiesUpdatedEvent) is not fired in Plone code (looked at Plone 4.3).
The only event that is fired once you change account info is plone.app.controlpanel.events.ConfigurationChangedEvent
. You might want to subscribe to that event and filter (as this event is a generic event fired in a lot of places).
Something I do to know what events are fired after an action is just: I add a print statement in zope.event.notify (print event, event.__dict__
) and start in foreground mode.
You might want to ask for an enhancement on https://dev.plone.org or better implement it. The plone.app.users package is a good place to start.