Has Google Removed The In-Depth Article Feature?

If it’s gone it’s a new thing and I’ve not seen any announcements about this.

If you search for “in depth articles” on Google you get this:

 

But, if you click the first results which is Google’s page about their in-depth articles feature you get this:

 

Seems odd!  Maybe a temporary glitch but a bit unfortunate as we were just about to use this feature and have been preparing for it for some time!!

Anyone any information about this?