A framework for Native Language Support (using GNU gettext [1]) has
been added to the Exiv2 library in the SVN repository. This will be
the main new feature of the next release.
Messages from Exiv2 like metadata tag titles, content, descriptions
are ready to be translated now.
If you are interested to contribute to the project, take a look at the
Exiv2 repository [2]. You can start a new translation using the
Exiv2.pot file or update an existing PO file. Please contact me to
coordinate. Thanks in advance!

Andreas

[1] http://www.gnu.org/software/gettext
[2] http://www.exiv2.org/download.html#devel