The AdWords Reach & Frequency report will now be moved from the Dimensions tab to the Campaigns tab. It will appear as an option in the Customize columns drop down of the tab.
Users will be able to see unique cookies reached as well as the average number of impressions reached per cookie for a Display campaign. Instead of being restricted to day, week, or month, users will be able to see the metrics for any time span by adjusting the date range, once they add the columns to the Campaigns reporting.
If you are running filters, macros, or scripts by using the data from Dimensions tab, you will definitely want to update them now. The change will be effective from January 28th.Google Moves AdWords Reach Reporting to Campaigns Tab!,