Exact eta? No sadly, I'm bad at meeting those and I feel giving one just curses me to miss it.
I can say though I have very little actual content left to add, its mostly just tedious/time consuming stuff that I leave for the tail end of the update, animations, my little planned UI changes and such, so its mostly done.
Edit because I feel like I should say something ---
Yeah, I know this update has taken fooooorever. I definitely overreached a bit with how much I'm actually adding to the game. 16 new characters, 21 main story events, (although some are short conversations), new character models, combat mechanics, a ton of locations, new animations... etc etc etc. It was a bit much, and I take responsibility for it. I'm still a learning dev, and hope to improve as I go, I just started full time on development a couple months ago, it before that having just been a hobby while I finished college, so I still have a lot to learn haha.