Google is testing a new “related searches” box in the mobile version of the Google Image search results page. Robin Rozhon spotted the change and posted a screen shot on Twitter of this new box. I cannot replicate the new user interface, but it does look like others are also seeing this test.
Here is what it looks like:
Google frequently tests new user interfaces, so we are not sure if this new one will stick or fade away over the next couple of weeks.