In the Ministerial Conference of the ESA Member States held in Luxemburg at the beginning of December 2014, the development program of the new Ariane 6 launcher had been approved and subscribed. The new launcher for GTO payloads will have the maiden flight in 2020 and will replace the Ariane 5 in 2023. Two configurations have been approved and named respectively Ariane 62 and Ariane 64 depending of the payload mass and the number of boosters (2 or 4). The Ariane 62 is designed for a 5 tons payload while the Ariane 64 is designed for 10.5 tons in GTO. The launcher will have the main engine derived from the present cryogenic Vulcain 2 engine, the new upper stage VINCI and will be equipped with two or four solid rocket motors respectively for Ariane 62 and Ariane 64 configurations.