No date. I do my best to work every week when I can afford to. The first update will basically add a Prologue and overhaul the existing first chapter's dialogue and art. I'm still working on the art.
The big worry is that I'm at a point where I'm making very little from the Patreon, not enough to live, so I'm trying to increase the value of the whole thing. Later today, I will release a first drop of bi-weekly bonus content for my dedicated patrons!