I've seen this before in the SERP's but wasn't sure how or why it happens. Today Google has renamed/changed every URL for my website.
For example if I search for "blue widgets" my website is 1st as usual but the URL under the description has changed from...
www.example.com/blue-widgets/
to
www.example.com > Blue Widgets Category
Blue Widgets Category is a hyperlink and leads to the category page for "blue widgets". The title still leads to the page I optimized "blue widgets" for.
I'm glad it has happened because it's one more link but does anyone know why this happens?