According to this French newssite, the low-cost daughter of Air France is to be called "Joon" (a phonetic rendering of the French word for yellow, "jaune", and at the same time the word for young, "jeune", most likely, as it i aiming particularly at the 18-35 age group). It is to start in the second half of the year with short/medium-haul from Paris-CDG, and long-haul from summer 2018. Schedule and fares are to be published in september.
http://www.europe1.fr/economie/la-compa ... on-3393608