Well, at the moment you can link individual CPT posts for example lets say we have a specific movie called "Immortals", linking from one language to another is no problem.
You can also link their taxonomies (e.g. actors, director etc) so when one is overlooking the actors archive they get transfered from one language to another - again no problem.
But, if am not mistaken, I don't see a way to link their base (e.g. movies). So that when one is overlooking the movies archive, the language switch would transfer the visitor on the movies archive of the other language(s).
The assumption being that the word "movies" was used as the
$post_type parameter in the
register_post_type( $post_type, $args ) function.
I hope I was clearer this time! Thanks again.