Microsoft is testing removing the site names from the Bing search results and instead showing only the site's URL. Google tested this about a year ago, so I guess it makes sense for Bing to test as well.
I was able to replicate this, here is a screenshot of this:
Here is how it looks like with the site name:
I spotted this via Sachin Patel who posted this on SEW.
Forum discussion at X.
