A new feature has been spotted in Google app install ads on mobile search results, where a “View app screenshots” link appears.
This link offers users the option to view screenshots of the app before proceeding to install it.

Google confirms that App campaigns can automatically pull content from app store listings, although it’s currently unclear where this specific format pulls its content from and whether it’s limited to a small test.
This update was spotted by Arpan Banerjee.