Google’s latest update does not impact how the Ad auction works and how Ad Rank is calculated. The only change that will be implemented for Paid Advertisements is the redistribution of the number of text ads that show between the top and the bottom of the page.
As a result of the continuous scroll, Google Search Text Ads can now show on the top of the second page and beyond. Fewer text ads will show at the bottom of each page.
Unlike Google Search Text Ads, there is no change to how Local and Shopping Ads show.