Not sure how else to comment, but I'd encourage keeping the content timeless rather than an update. So don't talk about recent releases or next we're doing X. (just a suggestion ;)
Building the Solana book
Install the book's dependnecies, build, and test the book:
$ ./build.sh
Run any Rust tests in the markdown:
$ make test
Render markdown as HTML:
$ make build
Render and view the book:
$ make open