The translation changes you talk about where part of eZ Publish 3.10, and where announced a couple of times.
You can read more about it here:
http://ez.no/developer/news/new_ez_publish_3_10_translation_files_available
http://ez.no/developer/news/community_newsletter_13_21st_september_2007 http://issues.ez.no/IssueView.php?Id=11451&activeItem=18