posted 1 year ago
The actual version used when the book was released was Spring Boot 2.3.2, however upgrading to a newer version should be possible (although it might lead to some minor changes in behavior). Upgrading to the latest 2.3.x release should be quite easy to do.
The problem when writing a book, everything has to be finished about 2 to 3 months before the release date. Anything new after that, how bad we even want to cover that, isn't possible anymore without delaying the release with 1 or 2 months.