framechat does have the ability to check for an updated version of itself on perlmonks as arturo suggests.

This is done by providing a link on the help page that compares the script's version info with a hidden tag on a small node containing the current version info. reputer also has this feature.

Update: deprecated asks for elaboration:

The script contains the following hash:

my%info = ( version => '1.2', date => '20010510' );
[download]

A small node on perlmonks contains the following HTML comment:

<!--INFO:version=1.1,date=20010415-->
[download]

To check for an update, the user clicks a link that downloads the version node and compares it with the %info hash, if they differ a message with links to the new code appear. See the source links above for the code that does it.

Perhaps a similar strategy can be used for a module, but having it check at intervals.