Any chance you could at least outline what you think the biggest changes in the past year and a half have been, for those of us who read the book? What are the things you would have written about differently?
The community is more sophisticated about packaging these days so I would spend more time going beyond the basics and it's obvious what the most popular frameworks are (from ~8 contenders to ~3) so I should bring those in concretely to illustrate points. When I wrote the book, many of the frameworks were pre-1.0 and hadn't figured things out.
I also wrote another (to be released) book just on distributed systems which has helped with my thinking re: backend integration/caching/offline though I'm not sure how that will be directly reflected in this book.
Finally, I'd like to audit my use of indefinite articles, particularly within chapter headings.