With the new 9.5 version users can now better administer their campaign experiments on the AdWords Editor. It also lets you apply and edit your experiment status, to a default maximum CPC or a maximum CPC bid multiplier. Also you can now both import and export these alternatives to be uploaded in CVS and XML.

Location Extensions:

This new version supports both the new and existing location extensions. You will now be able to create new location extensions for any address, modify the existing locations and also download or uploads data in CSV and XML manually.

Background Download:

An additional modification that ought to be a timesaver is the ability to download several of your large accounts in the background whilst you are working an another account.

Additionally, Google has also "improved revert functionality and streamlined Add Multiple Items workflow."

Apart from the above major changes, for the full list of changes, check out Google's release notes.

So, the next time you log into your AdWords Editor account you will be prompted to download this new version. You can now also download this 9.5 version from the Editor web site.