I’m not sure when exactly this happened, but Google seems to have gone live with the redesigned Google Image search results they’ve been experimenting with for some time. Now instead of seeing the file name, dimensions, size and URL, you’ll only be getting some “context-aware” snippet below the image. If you hover over the image, the image’s the size & dimensions and its domain appear dynamically.
This new design has removed some inessential features and the content snippet is more helpful. Google has also removed domain info. However keeping the domain info might have useful for the searchers.