Dassault engineers managed to bring the delta wing up to date by moving the aircraft's center of lift to the front of its center of gravity, giving the fighter a degree of instability that enhanced maneuverability.
Dassault is also competing for a Brazilian deal with the "Mirage 2000 BR", another variant of the Mirage 2000-9, with the French company partnering with EMBRAER of Brazil on the deal, though due to Brazilian budget problems the competition has dragged on for years.
Dassault had no buyers for the big Mirage 4000 and it was mothballed for a few years, but pulled out of retirement in 1986 with a spiffy new desert camouflage scheme to be used as a test platform for the Rafale fighter.