Google analytics has recently rolled out minor updates which may catch you off guard. Here’s a quick look at those changes. The terminology in the user interface has now been updated to something a bit less confusing and more user friendly. What was once known as “Visitors” has been changed to “Users” and “Visits” have been renamed to “Sessions”. These changes don’t affect your data in any way.
Google made this statement on Google Plus – This product change can affect you in different ways, based on how your account is set up and what kind of data you collect and send to Google Analytics.