Attack on Titan's finale was a big deal both for the anime and manga when it was originally released in 2021. Considering the original manga's ending was quite controversial, fans have been waiting to see how the anime might change or fix that ending, especially given how closely AOT's mangaka, Hajime Isayama, has been known to work with the team at adapting the material.
Source：https://www.cbr.com/aot-finale-manga-vs-anime/
