In an AngryJoe Preview at 15:53

https://www.youtube.com/watch?v=63-ws3_jhx0

Swen, is not sure as there will be millions of words due to more origins to be added. Though the words that pop out above the NPC's will defiantly be voiced (Swen said on that video) but I am guessing they really need allot more funds for full voice acting and the game is not finished meaning dialogue needs to be changed or have not been added where voice acting will be the last on their mind.