It was included in some of the L8 gold packages, etc. It was likely completed months back. A thank you to Isaiah and Andrew.
I only post these for folks that operate at the margins. Yes, most don't need it, nor will ever use it.
Why is it unusual or useful?
1. Latin. Quite a bit of the later fathers are in latin. If memory serves, all the African are latin. So, if you want to see comparative usage, and hopefully the word is in the Clementine (only lemmas from the Vulgate).
2. Cross-testament usage. The Vulgate was one of the earlier translations that crossed both the hebrew and greek, so you can look at what their (largely Jerome's) semantic perceptions were. Modern folks just assume a cross-language equivalence, even though that's almost impossible.
3. Analytical lexicons, in general, are great for when you have an OL word, it's not tagged, and you are too lazy to track it down. A right-click, and if lucky, a gorgeous door into your Logos system. I always prioritize analytics below my regular lexicons. They catch fly balls.
https://www.logos.com/product/148408/analytical-lexicon-of-the-vulgate
EDIT:
If you're remembering a free dictionary of latins forms (thread below), it's now a pretty penny:
https://www.logos.com/product/15716/dictionary-of-latin-forms
https://community.logos.com/forums/t/46330.aspx