> Roughly every three months, the book is updated to keep up with the latest developments in the Rust ecosystem. In particular, we make sure to update all the crates we use in the book to their latest released version. If you bought a copy of the ebook, you can get the latest book revision at any time by redownloading the content from here.
I was expecting it to be relatively out of date, but I was OK with that since the libraries in this ecosystem are relatively stable.
To my surprise and delight, in the first few pages I came across the sentence "As of October 2024"
So I think the printed version is either print to order or printed in very small batches, considering the book itself is several years old at this point.
I'm half way through it now, I can highly recommend it. And if you are like me and prefer a printed version, don't be afraid to spring for it.