Last year I read Introduction to Theories and Concepts in Physical Science (1985) by Holton & Brush. At the time I was looking for a general introduction to physics. By accident I found out that in 2001 a third edition of the same book was published under a new title, Physics, the Human Adventure. Because I was impressed by the clarity and conciseness of the original, I decided to check out the new edition.
This new edition is practically the same as the old one; the authors slightly revised the first 30 chapters and added some extra information (only minimal though). In addition to the original chapters, three new chapters have been added: one on cosmology, one on nuclear physics and one on general scientific theories. These three chapters are all crammed into the last part of the book. The book feels more complete and up to date, but it also feels like 'just' the old book with some extra paragraphs attached to it.
So even though the new information is interesting, it isn't really a different book. For a new edition (after 30 years) this is really disappointing. But overall it remains a concise and accessible introduction to a very interesting field; I recommend this edition over the old ones.