AdWords Editor 3.0 for Mac is now available and includes all the new features released a few weeks ago for Windows, such as the ability to add site-targeted campaigns, edit a different account while posting changes, and pause or resume keywords, ads, and sites. New and existing users can download version 3.0 from the AdWords Editor website.
For users upgrading to 3.0 (Windows or Mac), here's a helpful tip from Igor T., one of the AdWords Editor engineers:
To avoid losing any unposted changes when upgrading to the next version of AdWords Editor, export an archive of your account. After you've completed the upgrade, re-download your account, import the archive file, and find your account information intact, including any unposted changes and comments. For a full list of features, check out the release notes.