Source: Crunchyroll (French article), Crunchyroll (English article)
Crunchyroll wrote:(I Google Translated this and made some grammatical corrections)
Annecy 2017: The Pluto manga finally adapted into animation
By 2020
It's at the Annecy International Animation Film Festival that we learned that the Pluto manga by Naoki Urasawa, based on the Astro Boy manga from Osamu Tezuka, will soon be adapted into an anime series. A poster appeared on the stand of the Japanese company Genco, present at MIFA (the professional part of the Annecy Festival).
In 2012, when Naoki Urasawa came to Japan Expo, the question was asked. Producer Masao Maruyama, who had already produced Master Keaton and Monster, explained that it was complicated because the story imposes a significant number of episodes (about 39 episodes according to him at the time, i.e. 3 seasons) and few companies want to engage in such a long format these days. The series is expected to arrive in 2020.
The manga has 8 volumes, all published in France at Kana.
[...]
Pluto manga story summary:
In a futuristic world where robots live like humans, mysterious crimes succeed one another. Robots and renowned researchers are murdered under very strange circumstances. All victims are found with a horn-shaped ornament on their heads. Gesicht, a robot inspector, is in charge of the case. He discovers that the victims are veterans of the last conflict in Central Asia, and that the targeted robots are the seven most powerful robots on the planet, of which he himself is a part! Inspector Gesicht then goes out to meet people and robots threatened to try to protect them from danger.