There is no CD version of the book for the official guide. The closest you get is the powerprep software which can be downloaded for free.
The link to the powerprep download is here: http://www.mba.com/mba/TaketheGMAT/ToolsToHelpYouPrepare/GMATPrepProducts/PowerprepSoftware.htm
The latest edition for the OG now, is the 10th Edition. An 11th edition that's slated for September, but that date is only tentative (and I say tentative because you know these dates are never accurate). It claims to have less questions than the current edition, but will come with more detailed explanations. Also, a verbal OG
will be released along with the 11th edition. It acts as a 'filler' for the verbal section from the 11th ed OG (I gather the verbal guide will just throw in the verbal questions that are in the 10th ed, but not printed in the 11th ed, but that's just my guess).