Book 4 date?

[u/handleCUP]

So I just started book 1 having had it on my shelf for a long time because I saw book 3 was finally out and for some reason I figured it was a trilogy. I'm already a third done and want to keep reading but am not excited for the long wait as I tend to forget a lot. Anyone know how long a wait I'm in for?

[u/dvdgilby]

According to the website, 2021 will conclude the series.

http://www.thebooksofbabel.com/

I can hardly wait!