More than an update, this is a completely new book. I reviewed every page of the 6th edition and made drastic changes. Although a few of the basics were retained with minimal revisions, several chapters were eliminated, others were revised, and a lot of new content was added. In fact, the word count of this edition is 40% greater than the last one!
The biggest addition? I greatly expanded the section on writing reports. In fact, there are now two full chapters on writing reports with lots of example comments and narratives.