You have to look in the link below under "Phil info" The selling dates of FDCés can be found in their articles.These are quiet expensive and
collecting one from every issued stamp will cost a fortune...https://www.laposte.fr/toutsurletimbre
The French post does not sell directly FDC's .The FDC's are sold in different locations
corresponding the stamps history,origin of the stamps ;topic in question.
So yes; FDC's exist today for French stamps.