That you could make decisions at an early point in the game that changed the way things happened much later, but not always in an obvious way, was one of the major selling points of the original. This time around, there’ll be more decisions and the consequences will run much deeper. Some places will be dramatically different depending on the choices you make earlier on.
Those choices will also be made more interesting for us Anglophiles by the mere fact our language is being used as the primary language in the game. While it might rightly annoy Polish speakers to see a game from their country made in English, the consolation for us is that we won’t be getting the substandard translation the original Witcher suffered from on release (and was corrected in the Enhanced Edition).