marzipan
There’s a similar (maybe even better) feature that was popular in Apollo, which is that, in the comments view, you had a button in the bottom right (position configurable) that, when tapped, would scroll you to the next top-level comment, and if long-pressed, would scroll you to the previous top-level comment.
Are you asking how to access the drawer? If so, you must go to the first tab, then at the top left, you have an icon, which opens the drawer (then inside the drawer you have the list of subscriptions). Not sure if that’s the only way to do this, since I’ve only had the update for a few hours.
Agree, this would be awesome, as an ex Apollo user I find myself missing this button a lot! Especially with its hidden functionality of jumping to the previous parent comment on long press.