According to this article in CarBuzz.com, we'll likely see the demise of the S-Class Coupe & Cabriolet as well as the C-Class Coupe & Cabriolet. I hope it's a long time from now because these coupes & cabriolets are my favorite Mercedes cars. I was thinking that my next car might be an S63 Coupe or Cabriolet but now I'm not so sure that'll happen.It's a damn shame that all people want nowadays are big SUVs and electric cars while sports cars and sporty cars are declining in sales.
https://carbuzz.com/news/mercedes-fu...han-we-thought

Doesn't look like they will be cut until after at least MY 2020, as there is a 2020 DOG for the S coupe.

https://mbworld.org/forums/s-class-c...coupe-cab.html

I've heard that the SL is being turned into a 2+2, so that's presumably the replacement for the S Cab.

+1 ^^^

The C205 however will be in production until sometime in 2021, still plenty of time for people who want to buy new to grab one.