Come November 10, 2014, Google has reported that it will be updating and changing some of the columns in AdWords. These changes will be made so that the columns now mirror how they actually appear in Google Analytics.
You can expect changes from the following columns:
- Pages/visit will change to Pages/session
- Avg. visit duration (seconds) will change to Avg. session duration (seconds)
- % new visits will change to % new sessions
Make sure you look for these changes, in your reporting columns, if you are using AdWords scripts or macros for your website.