I am currently working on two new chapters and several revisions of the book. I am inserting a new chapter 12 that will cover Images, WAV files, and Sprites (recently added to the language). Also I am adding a new chapter at the end that will cover stacks, queues, and a couple of sorting algorithms.
This week I am also teaching an summer enrichment class to 12 middle-school kids using the book (without the new additions) and they are having a really good time. Several of them are programming at home and really shining. I will post a more complete discussion of how it went and how the schedule worked, once the week is over.