My observations of the new 2012 JK Rubicon Unlimited as compared to my old 2007 JK Rubicon Unlimited. The major changed between the models are the new automatic transmission, new 3.6L Pentastar engine and the new interior that came out in 2011. We have all heard about the new JK's by now, and the different features on it. I will not go in depth about the technical changes like the axles, lockers, stability control, etc. Just surf over to www.jeep.com and get a good read on the new features.