Being a DIK, best guesses on time line for next update?

Nuked all my old saves and started fresh before ep12 as It's been way too long since I last played and couldn't remember what was what with them.

So far I have a Bella route and a others route split for Rio and Zoey...... and possibly Sally... 🤪

Having played through 12 with these routes so far, and basically already knowing the possible current "endings" for the rest, I'm not really feeling like I need... or want.... to play through all the routes again until the next update, as I will most likely forget most of it and would have to start over again anyway.

I know 11 and 12 were around a year and a half between them, but I don't know what the previous update timelines were, so I'm curious to hear some insights from those who may know more about how everything has been going up to now.

I'm guessing another year and a half at least?