There is a lot of Latin grammars out there, but here I am looking for a specific kind: a descriptive modern Latin grammar.
By modern Latin I mean the Latin of our own era. I would like it to be as recent as possible — not in terms of publication date, but in terms of the language described. By descriptive I mean that it describes the actual use of the language, not how it should be used. Many Latinists today strive to follow classical grammar, but they have varying rates of success. Idiosyncrasies are transferred from their native languages and modern life might require things for which the classical language is now well suited.
What I am looking for is a description of the Latin language as the living language of today. It can well be a comparison to classical Latin instead of a description of the modern variant(s) in and of itself. The study or grammar can be restricted to some subset, such as a specific Latin newscast or the language of a specific living Latin community.
Latin is used actively by a number of people in today's world. There are online and offline communities where it is used for communication, there are Latin newscasts, Latin texts are composed for festive occasions, and probably something else that I forget. I call all of this use of living Latin "modern Latin". (Suggestions for better terminology are welcome!) The tradition to use Latin for communication has never — as far as I can tell — stopped after the Roman era, but it has changed form. In terms of active everyday use, most of Latin evolved into Romance languages, but Latin itself has survived through the ages as well. For example, I do occasionally write an email or chat or write a speech in Latin, and my Latin is certainly not exactly like Cicero's.
If the question is somehow senseless or impossible, arguing that would make a good answer. Perhaps today's Latin is not uniform enough for such a description. Perhaps we follow classical Latin so well that there is no discernible difference. Perhaps the matter has not been studied much or the findings have not been written up.