Would you consider making another possible language to choose, means Polish? A lot of people would use it, as I know many of people that stopped playing old version due to language bariers. Polish language was long promised in Infernum's times but at tthe end, it never happened.
at the moment, there are no plans for a polish localization. If that changes, we will inform you immediately.
I think some people could just make their own translate for polish. That option would let developers doing more content.