Google has announced changes to the information shown on image thumbnails, displayed when you hover over an image.
Currently when you place your mouse over an image you’ll see the dimensions:
Google SearchLiaison tweeted yesterday that later this week, Google images would start showing new icons on desktop indicating if images lead to pages with products for sale, recipes or video content. Hovering over with the mouse will show further information with text or video length.
Google gave a screenshot of what it will look like.
Image dimensions can still be accessed by hovering over the image in the information display that appears when a thumbnail is selected.
Google added that “Licensable" icons, announced last week, remain in beta testing. This is a new way to display licensing information through a badge on image thumbnails in Google Images. It indicates that license information is available for the image, with a link to the license in the Image Viewer, providing detail on how someone can use the image.
Google says you can provide metadata in advance, to ensure your images are eligible when the feature becomes available.
There's detailed help on how to do this here: https://developers.google.com/search/docs/data-types/image-license-metadata