Bing tests expandable sitelinks that display descriptions on hover
TLDR
Bing is testing a new sitelinks interface variant that displays link descriptions when users hover over individual sitelinks.
Optimixed Overview
Optimixed's original report on this story.
SERoundtable reports that Bing is testing another variation of expandable sitelinks in search results, this time showing descriptions beneath each sitelink after hovering over it. Microsoft has previously tested different expandable sitelinks formats, and this represents a refinement to how those links and their context are displayed to users.