Hello! actually, it depends on the country you will take the exam. The new format will take 3 years to be adapted worldwide. According to the official organisation: Les épreuves au nouveau format en 2020 représenteront environ 15 % des épreuves dans le monde, ensuite 50 % en 2021 pour arriver à 100 % en 2023.
I guess the 15% of 2020 (starting from this month) will include France and european countries, although it is not an official information, just my opinion.