Custom Bible Chapter Summaries
Custom Bibles you make from the Generate page now pull in your chapter summaries. Use the "Chapter Summaries" panel to write them, and read all the details near the end of the help on the Chapters page.
The next milestone on this front will be a scheme for adding your other notes to the left and right margins of your custom Bibles. The Marginal Notes page under the "About" area discusses this.