"CME is phasing in an expansion of the so-called order book, enabling traders on the Globex platform to see more of the bids and offers. Beginning Sunday evening, the nation's largest futures exchange will roll out order books that are 10 deep, rather than the current five, for futures on grains, oil seeds and the Dow Jones Industrial Average." WSJ story at http://online.wsj.com/article/SB123757297645997581.html The CME website has little visible information on this change. You have to search on the exact topic to find any useful information.