I put off writing this review because I was more than a little bit disappointed. As I got passed the first chapter, I was thinking, I've read this book before. And the truth is, I have. This is a 3rd edition. I didn't catch that before.
In the preface, the author lists 14 additions. None of them stand out as worthy of buying another edition if you already have an older edition.
If you are an aspiring writer and have never read this book before, you should read it at least once. I don't know that it matters which edition you read. The first one I read was on the local library's shelves. I'm quite sure this one will be too.
If you have already read this book or purchased a previous edition, don't worry about getting the newest version. It won't help you that much.