What has changed with the organic chemistry is that it is not purely organic chemistry. Book I is traditional organic chemistry, with a good deal of the text being similar (or the same) and about 25% of the passages are new. Book II is biochemistry and applied organic chemistry with a good deal of new text and about half of the passages are new. The amount of writing and rewriting over the past six months to make this book as current as possible sets it apart from everything else. There are a lot of resources out there already, but it's not another one, it's the most helpful one.
For now, the chapters on social psychology address and integrate sociology concepts. The reality is that there is not much of distinction in terms of passages and questions, as many experiments taught in social psychology are the crux of sociology theory. A perfect example is the bystander theory. Students in the course who have used this book (and the lectures) have done quite well so far (averaging over 128), so you'll be more than fine. It covers the topics in the AAMC list, and that is the key thing.