Shinomonogatari available:

The final two novels of Bakemonogatari Monster Season have been translated.  This would be stupendous news in the past, before the anime covering this same section of the franchise was announced, but now it's just nice news.

There are slight differences between the books and the anime, so it's worthwhile from that point of view to also read the books.  But the biggest benefit is that the story can be enjoyed years in advance.  The anime may have been announced, but god knows when it will actually reach the conclusion of Monster Season.  The books are available right now.

Plus there's another strategic benefit to reading the books right now -- the next book in the franchise is also translated, and that book has not received an anime adaption notification.  Which means by reading these two books you can move on to the actual prize, the book that won't be animated.  Every Bakemonogatari book is amazing so it's worthwhile to read two unnecessary books just for the sake of one necessary one.

I'm 58 pages into the book and so far two things have happened -- Shinobu asked Araragi to take her on a trip to Europe, and Araragi made a phone call to Kagenui who then arranged for transportation.  It's rather funny comparing 58 pages of another person's book versus 58 pages of mine.  Page 58 of '100 Waifus' is part of Chapter 7, which occurs months into the story, after Christopher died, met God, got granted a wish of 100 waifus, built a city with them, developed the city's technology to modern levels, and got into a debate with Himeno whether they should be having sex yet.

The density of '100 Waifus' is one of its finest features.  On the other hand, Shinomonogatari has made so many funny jokes in these past 58 pages I really didn't mind.  It's true that everything is ridiculously stretched out and overcomplicated, but Shinobu and Araragi have such a good rapport that I don't mind spending a dilated amount of time with them.  It's also very clever to incorporate the events of the Covid-19 epidemic into this work of fiction, making it feel a lot more grounded and real.  Though it humorously changes the timeline of all previous events -- now suddenly Araragi went to high school in 2018, as opposed to 2005 when it was first published.  I guess a book about supernatural events including time travel doesn't worry too much about consistency.