In Which We Discuss Audible Badges

So, my Audible app just updated itself and now it has a whole bunch of new badges on it.  Or, rather, they are almost the exact same badges that were on there before but now they work slightly better.

The new badges are as follows, in alphabetical order.   The entries with question marks are those that I don't actually have yet.

Edit: my app just (18th September 2020) updated to announce I'd achieved the silver level of The Librarian.  I passed 200 books long ago, so I suspect there's been some kind of update.

Badge Name	What to Do	Basic	Silver	Gold
The Annotator	Add a bookmark with a note.	10 bookmarks	40 bookmarks	125 bookmarks
Bitesized Bookworm	Listen to parts of different titles in one day.	3 titles	15 titles	40?
7 Day Stretch	Complete books in one week (note; I earned this by marking books I'd read before as 'finished', not by listening to them all in one week).	3 books	5 books	10 books
Deja Vu	Listen to books multiple times.	3 times	10?	20 times
Done and Dusted	Listen to one complete book, start to finish.	1 book	3 books	5 books
The Epic	Complete  titles over x hours long.	20 hours	35 hours	50 hours
High Noon	Listen during lunchtime (hours do not have to be consecutive!)	1 hour	2 hours	3 hours
The Librarian	Collect audiobooks!	50?	200	500?
Marathoner	Listen for hours in a row.	2 hours	5 hours	8 hours
Night Owl	Listen during the evening or night (hours do not have to be consecutive!)	4 hours	6 hours	8 hours
The Optimist	Have unfinished books in your library.  They must be downloaded and marked as unfinished.	10?	20?	75?
On the Trot	Listen to a portion of an audio book every day.	7 days in a row	30 days in a row	90?
Social Butterfly	Share something to facebook or twitter from the app.	5 times	25 times	100 times
Stats Surfer	View the stats screen.	50 times	200 times	500?
Weekend Warrior	Listen during the weekend (hours do not have to be consecutive!)	5 hours	10 hours	24 hours