Dr. Stone season 3 won’t arrive until 2023, based on the announcement during the Jump Festa in Japan. However, a special episode of upcoming character Ryusui will air summer 2022. A new key visual and trailer released during the special announcement over the weekend.
Like the previous seasons, Dr. Stone leaves the stone-age world on a cliffhanger. If you haven’t jumped into the series yet, highly recommended to watch the series now on Crunchyroll/Funimation. Additionally the manga is still going and available on the Shonen Jump app.
Dr. Stone season 3 returns in 2023 as the special Ryusui episode airs summer 2022.
Source: Crunchyroll