Danio: First of all, your behavior seems quite strange. I'm the developer of Ghost in the Sheet and nobody from your group contacted me about any translations. If you asked me before, which could be very easy thanks to the general reachability over WME or GitS forums, I'd tell you that Play.pl already have a Golden Master of the polish localized game since november. The question when it hits the market is obviously their choice, but I presume it won't be a long time. In this light saying that you *must* do polish localization is very suspicious to us developers as it could mean many different things.
Your comments on play.pl are very unprofessional and I find your behavior somewhat rude. As odnorf said, Mnemonic as the WME headmaster would never provide you with false info. My advice for you now is to wait for the polish version and then checking out if wouldn't be a surplus work.