The big news last night came by way of the AdWords Blog about Google making two big changes. As I explained in great detail over at Search Engine Land, the two changes have to do with "transparency" and "a new quality algorithm."
In terms of the transparency, Google will be adding a quality score column, that includes a minimum bid CPC for all advertisers today or tomorrow.
It may look somewhat like these test screen shots we have reported:
This information will help you for the next big change.
The Quality Score algorithm will be updated to give the advertiser the "benefit of the doubt." So when you ad a new keyword that Google has little or not historical data on, they wil typically give you a lower CPC instead of a higher CPC (as they have done in the past.