As I was browsing the French Air France website today, I clicked on a banner titled "Les Boosters de Miles Fréquence Plus." I was offered to sign up for a special offer similar to "Désir d'Azur" and the other similar promos AF did in the past.

My "personal bonus" is 4,000 extra miles for 13,000 qualifying miles earned between Jan. 1st and Mar. 31st. or 7,000 extra miles for 17,000 qualifying miles. You can also collect three "jokers" to lower the miles requirement (by 650 miles for each joker collected).