I hope and pray that there are organizations dedicated to keeping Polish culture and the Polish language alive. The Poles are now a diaspora people, and unlike with the Jews, Parsis or Romani there's nothing really keeping them from assimilating into their host countries and losing their ancestral tongue in the process. Same applies for other Slavic nations that have been completely conquered by the Reich like Belarus and Ukraine (even harder for them considering their cultural proximity to Russia) and to a lesser extent the non-German Aryans within the Third Reich (Dutch, Danes, Norwegians, Swedes etc.).