a Date of release ?
They still have to code the character creator and the stories, if not other things like new models and such. There is far too much to do to even try to make a guess at when it will be released. Give it another year probably.
You make game development sound complicated. I've done tools like that for gamejams within two days. As for breaking down specifics! Stories aren't that complicated infact its only getting all the information that takes the longest and considering the stories in this game aren't that complicated and rely on the player triggering events that's just a matter of recycling the same template and filling in the necessary information.
However! You can automate that process.
As for ArtPass they've seem to have done the biggest part of it with the scenes and environments, characters depending on the artist can be sculpt, rigged and optimized in a short amount of time compared to large environments along with animations.
Now. The character creator depending on what they are doing if its a series of sliders then that can be easily built and optimize over a few days or a week.