The language specific path strings were planned to be implemented in eZ publish 3.8, but this feature was left away due to technical issues ( http://ez.no/community/developer/specs/improved_multi_language_in_ez_publish_rev_2 under "URL aliases").
I'm not sure but maybe it will be implemented in eZ 3.9 ( take a look at http://ez.no/community/developer/specs/feature_request_list_for_ez_publish_3_9 ).
