Princeton Review

I bought the Cracking the SAT books for Physics, Maths and Chemistry. However, I bought them some time ago, so they are the 2009-2010 Editions. Recently, the 2011-2012 editions came out. Should I also get them? Is there anything new/different in them?</p>

<p>I really don't think that would be necessary. It's not like they changed the test formats/content or anything</p>