In the reddit AMA some time ago they said
Larian_Adam
Hello! Yes, custom characters will have voice acting - you’ll choose a voice as part of character creation.
-Will those voices be for just comments during combat or will they be voicing dialog conversations as well?
-They'll have full voice acting, just like origins!
https://www.reddit.com/r/IAmA/comments/fhk1u3/im_swen_vincke_creative_director_at_larian/fkbnauj/So maybe you have the character voices at launch. The banters while exploring were voiced, tho.
