The CD-ROM includes Free CD-ROM of The Complete Official Guide for GMAT Review, 12th Edition. The Official Guide to the GMAT, 13th Edition will be the only guide on the market that contains official questions from the new Integrated Reasoning component being fully integrated into the test in June 2012. Because this component is more interactive than other core components in the GMAT exam (Verbal, Quantitative, and Analytical Writing), the Integrated Reasoning practice questions are housed on a companion website that readers will be able to access after purchasing the book.