As part of our ongoing efforts to help improve the quality of our ads, we're announcing an update that changes how each keyword’s 1-10 numeric Quality Score is reported in AdWords. Under the hood, this reporting update will tie your 1-10 numeric Quality Score more closely to its three key sub factors -- expected clickthrough rate, ad relevance, and landing page experience. We expect this update to reach all advertisers globally within the next several days.Google AdWords Quality Score Reporting To Change [adwords.blogspot.com]
We're making this change so that the Quality Score in your reports more closely reflects the factors that influence the visibility and expected performance of your ads. We hope that providing you more transparency into your 1-10 Quality Score will help you improve the quality of your ads.
Please note that this is only a change to how a keyword’s 1-10 Quality Score is reported. It does not change how Quality Score is calculated in real-time for each auction, and thus won't have any direct effect on your ad performance. So unless you have automated rules tied directly to your reported 1-10 Quality Score, your ads should continue to behave as they did before.