If you have a multilingual website, it is not possible to subscribe to notification in a specific language.
Please see
http://issues.ez.no/6377
http://ez.no/community/forum/install_configuration/multilingual_notification

by using the -s parameter of runcronjobs.php, I can specify the language of the notification email but I do get notification from all languages.

A welcome improvement would be to be able, when you select the subtree you want to be notified from, to have the extra possibility to select the language of the content object that you want to be notified about.

This would be like in the workflow, where you can specify the language.

Thanks