As Luisenigma1 said they confirmed it on Reddit, they also said there are no plans for Witcher figures, they're focusing all their money on advertising their new game and on merchandise for it which makes sense.
The character design will probably be a little different in the final version of the game as well, still got almost 7 months to go and anything can happen in that time.
Tbh I'm not really interested in the V characters simply because I'll likely end up with someone completely different in my game, at least with characters like Geralt or Arthur Morgan, despite being able to customize them to some degree, they have their own face and personality, V on the other hand will really be up to the players to shape both physically and mentally.