Custom Rules – A feature that allows you to define rules as a best practice. See the example in the picture where was setup the best practice of having 4 sitselinks. If you don´t follow this rule, the Adwords Editor will alert you while using the tool.
Faster downloads – With the Adwords Editor 12, Google promises reduce the waiting time for your accounts to download.
Maximize Conversions – Google introduced this bid on the online UI of Adwords one month ago, and now is available on Editor.
Responsive Ads – Now is possible to use the new customisation fields for responsive ads, including “4:1 logo,” “Price prefix,” “Promotion text,” and “Call to action text.”
Universal App Campaigns – Is now possible to upload 20 images and 20 videos.