Just to make sure you're on the right track, I don't think the "2015 MCAT" starts in January of 2015. It starts a little later; something like February or March.
AAMC's recommended coursework for the MCAT still includes a year of general chem, biology, organic chem, and physics, plus one semester of psychology, sociology, and/or microbiology/biochemistry. IMO, the overlap between the 2014 and 2015 exams involve the stuff in italics. I would at least review those for now, and possibly the chapter outlines and major vocabulary for the new one semester classes. It will not hurt to practice reading quickly and actively either. Many people recommend reading The Economist for that.