[weehobbes]

I don't think this is a common case for "regular users" but in my library of coding books, I find both very useful. For example, O'Reilly has a very different style/quality compared to Packt. And it's helpful to know when the book was published to know it's recency and whether it may be outdated.

[IanCal]

Is that something you want to know after selecting a book, or for finding one?