I don’t see any information on the website or the available book content that says what is new about this second edition?
The second edition has four new chapters:
- Features are not Requirements (chapter 2)
- Keep an Open Mind (chapter 12)
- Designing the Backend (chapter 30)
- The First Run Experience (chapter 32)
In addition to that, the second edition fixes all of the links that no longer worked, fixes all of the known typos and errata, updates outdated screenshots, and has a more useful table of contents.