Carradice: Thanks for the explanation. I guess that they were not getting much revenue from Sang-Froid and at least want it to become better known, so that the name helps when they promote newer titles.
Petrell: That would only work if they had announced new title at the time they made Sang-Froid free. They haven't announced anything as far as I know and haven't even posted on their site, twitter or their facebook page since last year and their last game, Conflicks - Revolutionary Space Battles is already over year and half old.
I don't know. They are not getting anything appart from being talked about, and (possibly, for the makers) the satisfaction of their work reaching more people--novels are to be read, games to be played.
With this game they seemed to have attempted to make something different. I was on the fence when it came out. Now I will give it a good try.
Again, thanks for the heads up and for the information on the devs.