Google has been busy testing new mobile snippet layouts recently. We've recently seen them testing breadcrumbs at the top of the search results snippet and now Google is testing the URLs, instead of the breadcrumbs, at the top of the snippet.
Will Hayes posted a screen shot on Twitter of the new test, showing the URL at the top:
Normally, what you see is the title at the top, not the URL. Here is the test from last week with what you should see (minus tags) on the left and the breadcrumb at the top on the right:
In December, we also saw Google testing URLs at the top but the UI was very different there.
Forum discussion at Twitter.