One of the things that are coming with a major update will be that all the playable characters will have voice acting along with their dialogue.
And yes, it's a real deal, I have heard a lot of it and I can say it will sound good.
Another guy is working on getting it all finished and then I put them into the game. Each playable character has their own voice actors which adds a lot of diversity to their voices.
In terms of DLC, there should be some. Thanks to all the buyers so far, I can properly fix the game and bring you additional story related content.
THANK YOU FOR BUYING THE GAME! :)