Publish book components (second and subsequent times)
The docs and wireframes for this dev is here.
The following text should be included in the modal for books that have the setting "support multiple versions" turned on:
Publishing as a replacement updates your chapter on Bookshelf with the revisions you've made. The previous version will no longer be accessible on Bookshelf. Publishing as a new published version creates a new version of your chapter on Bookshelf that contains your substantive updates. Previous versions will also be accessible on Bookshelf since they are part of the scientific record.
Let me know if anything is unclear.