new AP Biology Exam?

When is the latest the AP Biology Exam was revamped? (by this I mean when was the most recent year the format or type of question changed)
I have a 2014 Princeton Review AP Bio book, but is it sufficient to study with for the 2017 test?

With the 2013 exam.

Yes, although PR probably is not the best review book for Bio, although for other subjects, it’s great. But that’s just an opinion.

Thanks! Is there a certain prep book that is better? As of now, I don’t feel very confident about the exam at all. There are some chapters I just totally blew and our bio class is moving slowly so we haven’t covered some material yet.

cliff notes and barron’s are good for bio, imo.