Isn't Le Mans and the World Endurance Championship the ACO's show? Why does the FIA get a say in the regulations? I thought the FIA's duty was to "advertise" the WEC, while the ACO basically run the show.
I wouldn't be surprised if the new regulations do get postponed, considering the relationship between the ACO and FIA. And if the regulations get postponed, well then Porsche's return gets postponed too.