@kevinhaig, I just updated hoverIntent (now r7).
– Backwards compatible.
– Supports event delegation.
– Supports handlerInOut, for parity with hover.
– Namespaced events, for better isolation.
Updated my site – https://bit.ly/hoverIntent
Pushed to GitHub – https://git.io/hoverIntent
I don’t have any more visibility into the use of hoverIntent than you do. I heard it was used in the admin pages of WordPress at one point (haven’t verified). Individual theme authors will likely need to update their themes.