I understand worries about whole Cenega thing in terms of quality of Czech localization and package of the game/collector's edition, but don't worry. Recently, I got few informations from Cenega lead. They told me that Comgad is still creator of the Czech localization and Cenega is able to publish special package(s) of the game, not some crappy package, unworthy for The Witcher franchise. More info here (czech language only) http://www.zing.cz/novinky/20665/lokalizaci-zaklinace-3-by-mel-stale-obstarat-comgad-cenega-pocita-s-vydanim-nadstandardniho-baleni-hry
Edit: And speaking to Hungarian players above my post, I'm not sure how it works in Cenega in global meaning, but I'm almost sure that Cenega Czech isn't responsible for publishing the game in Hungary. If you have local Cenega office in Hungary, I believe it's their business. I can't imagine the situation when the game forces Hungarians to use Czech subtitles. This announcement is just informing that Czech version will contain Czech subtitles across all three platforms, nothing more, I don't see any rejection of possible Hungarian subtitles