This campaign is only for the English version of the game. In addition to that, Dale of Merchants Collection will be released at least in German. However, the schedule for that is unknown for now.
As for other languages, we don’t know yet. It’s not as much up to us as it is up to possible foreign licensing partners. If other publishers are interested in the game, it might be released in new languages. We can’t promise anything yet. Previous Dale of Merchants games have been released in multiple languages so we are hopeful!