Hi
numberchic,
The Official Guide 2015 edition has the same practice questions as the previous edition. No new questions were introduced. But, they did introduce an online companion tool in the 2015 edition.
Here's a description of what's new from their website:
NEW to The Official Guide for GMAT® Review 2015:
Access to the online Question Bank including more than 900 practice questions of all types with answers and explanations, math review, essay topics, and a diagnostic test, as well as access to 50 online integrated reasoning questions.
Exclusive access to videos from real test takers and GMAC staff who share insight and tips on GMAT® preparation.
Read more on their website:
https://www.mba.com/us/store/store-catal ... -2015.aspxHope this helps!