That doesn't mean FSDT wouldn't do their own version... ImagineSim is working on KIAD, which has been released by BluePrint, and BluePrint is working on KORD, which has been released by FSDT. Competition is a good thing in payware airport scenery, especially if AES is in the equation.
As for future plans, if De Gaulle was part of it, odds are Virtuali wouldn't tell you, because it cuts down on the harassment factor of "When will... be released?" or "Is... finished yet?"