Google is changing the Authorized Seller State dimension values on DV360. The change will happen in August and September. Old values are Authorized, Ineligible, and Non-Participating Publishers. New values are Authorized Direct Seller, Authorized Reseller, Ineligible, and Non-Participating Publishers.
The change on the Authorized Seller State dimensions will allow advertisers to know if they are buying inventory directly to the publisher or via resellers, and also compare prices. Google says this change is to align with the ads.txt targeting options.
Google is also changing the Active View: Avg Viewable Time metric behavior. Active View: Average Viewable Time (Seconds) in DV360 reporting returns will return values in seconds (new behavior) as opposed to milliseconds (old behavior).