I have owned and used both 2010 and 2011 First Aid. This edition adds color headings, puts images with text, and spreads out the formatting. Overall, this is a great change.
However, because they so drastically changed the formatting, and seem to have little editorial oversight, they managed to omit entire subsections. While some sections, such as "Reportable Disease" may be ommitted for being too low yield, others such as the drug Hexamethonium, the Measures to Treat Risk Factors, etc., are missing entirely. Many of these items are listed in the index (perhaps even BOLDED), but lo and behold they are missing on the actual pages. I have finished studying about 20% of the book to a high level, and have found 10+ instances of this.
Not really a problem if you have a 2010/11, or use Doctors in Training/Kaplan as you can just annotate in. But, I think this is just such a sloppy way to make a book (combined with the thin, smeary paper everyone else has mentioned), that I lower it from 5 to 3 stars. Having various errata is fine; entire deletions are not.
Not a deal-breaker, and I would buy it over 2010/11, but just make sure you annotate b/c this book is just straight up missing stuff it says it contains.