Show indicator when a default text content element has been updated?

[fefrei (Felix Freiberger)]

@tophee

Whenever an upgrade results in a changed default copy AND the site is currently not using the default copy (here the aim would merely be to alert admins to the existence of a new copy which they would never see because they are using a customized version)

I like that idea! Would simply firing off a message to @staff as part of the upgrade work for this?