The popular manga series Shaman King by Hiroyuki Takei, who has accumulated over 35 million copies, is getting a completely new Shaman King TV Anime and it will be released on April 2021, you can watch the new promotional video below.
The new anime will be based on all of the 35 volumes of the manga and will be animated until the last volume, while the first two episodes of the original 2000 Shaman King anime will be rebroadcast on Full☆Anime TV! (フル☆アニメTV)
Additional details for the anime will be coming soon.
Source: Shaman King Official Japanese Twitter, Shaman King Official Japanese Website