Google quietly announced on Google+ that they issued a new version of the AdWords Editor, a week after releasing a huge update to it in AdWords Editor v 11.

This release is 11.0.1 and aims to fix a CTR (click through rate) reporting display error. Google said it also fixed other things but did not disclose those changes, nor are they documented (currently) in the release notes.

Google said:

Forum discussion at Google+.