To be completely transparent, there hasn't been much progress. A couple weeks after the last episode was released, I set off on a holiday to Europe and just got home a few days ago (don't give me shit for it, it's literally the first one I've had in like 10 years). But now that I'm home, I'll really start working hard on the script for the final ep. As far as an ETA goes, I can't really give an exact one, but it certainly won't take a year like some people have said. If everyone knuckles down, I'd say it could come out in about 4 or so months.