Dr. Stone: Ryusui gets a trailer and a release date of July 10th, but Season 3 of the anime is still set for 2023.
TMS Entertainment released an exclusive video and image of Dr. Stone: Ryusei today, confirming the film's release date of July 10, 2022. With official streaming in Brazil, the episode will last 1 hour and will serve as a bridge to the anime's third season, which is set to premiere in 2023. The story will center on a new character named Nanaumi Ryusui, who was discovered by Senku and his friends as they were cruising around trying to figure out why humanity was becoming petrified. Inspired by Riichiro Inagaki's manga, Dr. Stone began with the 2019 anime (24 episodes) followed by the 2021 season 2 (11 episodes). The plot showed the saga of the young Senku, genius of science and living library of knowledge who awakened thousands of years in the future, noting that almost all of humanity was petrified by an unexplained phenomenon. Along with new friends he promised to bring the human race to modernity with a lot of creativity and a dash of mad scientist. 
Already finished, the manga was published from 2017 to 2022 (26 volumes) drawn by Boichi.