The new safety feature displays a warning message in the status bar and locks down RPC if it detects a problem that may require an upgrade.
It would be nice to have a link in the about dialog to take users to a location for current version information and downloads.
It also wouldn't be a bad thing if the software was able to determine the current version and issue a warning for out of date software. There has to be plenty of this logic GPLed around the place. I'm happy to search it out if nobody has some at hand.