Authconfig has got quite a few new features since last manual page update. I suggest to include them into man to make it consistent with --help option. Here is the list of missing options to make it easier :-) passalgo ldaploadcacert winbindoffline smartcard requiresmartcard smartcardaction smartcardmodule pamaccess mkhomedir locauthorize sysnetauth cache help updateall (this one should be perhaps described in more detail?)
Changing version to '9' as part of upcoming Fedora 9 GA. More information and reason for this action is here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
This should be fixed in the current release. The manpage doesn't mention and describe all the options though, it just says: The list of options mentioned here in the manual page is not exhaustive, please refer to authconfig --help for the complete list of the options. I think this is sufficient.