It ends at just when Volume 22 ends, so chapter 90. (I just binged read all the chapters covered this season after this episode). Surprised at how faithful the adaptation is from manga -> anime.
I'm kinda sad we are getting the same hints as last episode (no big info drop), so there aren't extra material until 2020 that will prove or disprove my theory/speculation from last episode. Was hoping something big when Eren kissed Historia's hand (Maybe he suddenly decides to use his power to erase everyone's memories of himself and head off outside the walls or sth). But Oh wells. At least we're continuing the time skip next season and that usually means big changes. :)