The change also suggests that fewer people may visit the actual pages hosting the images, which might be a concern to publishers. Anticipating this, Google’s post about the change says that it has added new ways to reach the image owner’s site that supposedly increase visits:
The domain name is now clickable, and we also added a new button to visit the page the image is hosted on. This means that there are now four clickable targets to the source page instead of just two. In our tests, we’ve seen a net increase in the average click-through rate to the hosting website.
Google Launches Streamlined Image Search