Google is bringing asset-level reporting to Display campaigns, giving advertisers more visibility into how each creative performs. Advertisers will be able to compare asset performance and decide which assets to keep, refresh, or remove based on data.

The Assets tab will also show when each asset was last updated, helping track changes over time. This brings Display reporting more in line with existing insights in Performance Max.
While the feature has not been spotted live yet, Google has published an official help page
explaining how it works, which was first spotted by Hana Kobzová.