Today after the broadcast in Japan of the last episode of Part 2 of the final Season of Shingeki no Kyojin, a part 3 of the anime to conclude the story.
Check out the image released after the episode:

Part 3 doesn't have a release date yet, but it will air in 2023 and will adapt the rest of the manga.
Synopsis:
Humans encounter Titans in Shiganshina District after years of peace. Eren, Mikasa, and Armin witness the appearance of the Colossal Titan and the Armored Titan, which breach Wall Maria. The Titans invade the city and wreak havoc, including the death of Eren's mother, who is devoured before his eyes. He then decides to seek revenge on all Titans by joining the Survey Corps.
Furthermore, the animation is still from the MAPPA studio.
The first part of Attack on Titan: The Final Season premiered on NHK on December 7, 2020.