Google has added a Campaigns tab to the manager accounts (MCCs) in AdWords in the latest update. Now you can review and make certain edits to the campaigns across accounts at the manager account level, instead of having to navigate in and out of separate accounts.
Change campaign status, edit the budgets and review performance (with segments, filtering and columns all available) across any number of accounts. You can now create new campaigns from this level as well.
Google also made some updates to the reporting, including the addition of segments and filtering tools as well as conversion data and other columns in the main Accounts tab. Now the date range selector also goes beyond 90 days and includes the ability to compare date ranges.
For those using sub-manager accounts, a new dropdown lets you select accounts directly linked to a sub-manager.