Google announced on Google+ that they have added a new way to explore related searches within image search through an image carousel.
Google said, "when you click on the related images query, you'll see a snapshot of the results and you can click View all images to see even more and visit their sites to learn more. "
Here is a screen shot of how it looks:
I personally do not see this yet but Alex spotted it a few days ago and has more screen shots.
Forum discussion at Google+.