Bing Search is now testing search result snippet tags and labels within the search snippets. This is something Google has been testing on and off for years.

Shameem Adhikarath posted some screenshots of this Bing search interface on Twitter:

Here is how Google was testing this:

Here are more screenshots from Shameem:

Here is another person seeing this as well:

And this from a month ago:

Forum discussion at Twitter.

Update: