There are several new chapters on very helpful and interesting topics (using futures for hedging, numerical procedures, swaps, credit risk, real options, insurance, derivative crises, and more). Some of this is new and some adapted from previous editions. Other material has been rewritten and clarified.
DerivaGem 1.5 is included with the book, but a URL is provided to get the latest version from Prof. Hull's website.
This is a terrific book and I consider it one of the most valuable on my shelf of business texts. It is one I would never want to be without and one of the few I am willing to keep up with the new editions. While no book is perfect for every use in every situation, this is one of the great foundation texts.
I had used an earlier edition of Hull, and it appears that John Hull adds all the relevant material needed for market finance with each new edition. In fact I have purchased several books on Mathematical Finance and Derivatives but few of them remain on my desk for future consultation.