Pressbooks makes it easy to update and revise books on an immediate and ongoing basis. You can implement and publish new changes instantaneously. If you have made your book available as a PDF or in another file format, make sure to run new exports of the latest version as these files will not update automatically.
Read more about exports.
If you obtained a MARC record for your book and are revising the work, you may need to release the updated version as a new edition. Email Liz Thompson, firstname.lastname@example.org, for more guidance.