@MikeD: the language XML files
here list phrases in alphabetical order within phrase group so that can be used to look for new phrases, but sorry, I don't have a list of the v.2.1.2 phrases.
@cheesegrits: do you mean the upgrade instructions in the readme.txt file? If so, please see number three. Maybe it should be config.php.txt and then people can rename the file if needed.