-The third edition's most noteable changes are that it has been massively re-edited. Some things have been re-organized, others expanded, and perhaps the most significant is that a lot has been deleted to make the book read better and not have so much repetition and redundancy.

-There has also been reformating. While the second edition brought major format changes (ie font face, etc) and divided the Star Wars section with a new chapter ("Enter Luke Starkiller"), this edition has added two more divisions: "Purgatory and Beyond," looking at the release and franchising of the original film, and "Returning Home," which divides the Episode I section into pre and post screenplay phases.

-Expansions and elaborations. While most of the second edition's expansions came from Rinzler's Making-of book, this third edition includes more information, has clarifications and even some corrections, and has many expanded sections.

-The second edition had an index feature which the third edition currently does not. It may be added in the future. I also decided to drop the "Conversations on Dark Father" appendix, as with the additions, especially in the appendix "The Dark Father," I feel that it has become unnecessary. It is available to read online as an article, or in PDF form--both of which have been re-edited further since the second edition/