Kimetsu no Yaiba will have longer episodes

On the official site for the anime adaptation of the manga "Demon Slayer: Kimetsu no Yaiba", it was announced that the final two episodes of the fourth season currently on air will have an extended duration according to the following schedule:

Episode 7 (June 23) – 40-minute broadcast block.
Episode 8/Finale (June 30) – 60-minute broadcast block.

It should be remembered that the "broadcast blocks" are the space that the broadcast of the anime occupies within the schedule of the television stations. Therefore, it cannot be said that the episodes will have the length that is mentioned, especially since you have to take into account the commercial breaks that are not seen on streaming platforms.

The third season aired during the Spring-2023 season (April-June) in Japan and had a total of eleven episodes, while the Crunchyroll platform was in charge of its distribution in the West. On the other hand, Koyoharu Gotouge published the original manga through Shueisha's Weekly Shonen Jump magazine between February 2016 and May 2020, compiling the work in a total of twenty-three volumes.

Production Equipment

Haruo Sotozaki (Hagane no Renkinjutsushi: FULLMETAL ALCHEMIST, Tales of Zestiria the Cross, Initial D THIRD STAGE) is in charge of directing the anime at Ufotable Studios.
Akira Matsushima (Fate/stay night [Heaven's Feel]) is in charge of character design, with assistance from Youko Kajiyama (Majokko Shimai no Yoyo to Nene), Miyuki Satou (Fate/stay night [Heaven's Feel]) and Mika Kikuchi (Hagane no Renkinjutsushi: FULLMETAL ALCHEMIST).
Yuki Kajiura (Sword Art Online, Mahou Shoujo Madoka☆Magica, Fate/Zero) and Gou Shiina (Tales of Zestiria the Cross, Emiya-san Chi no Kyou no Gohan, THE IDOLM@STER) are in charge of composing the soundtrack.

Kimetsu no Yaiba will have longer episodes

General synopsis of Kimetsu no Yaiba

Tanjirou Kamado lives with his impoverished family on a remote mountain. As an older brother, he took on the responsibility of ensuring his family's livelihood after his father's death. On a cold winter's day, he goes down to the local village to sell charcoal. At dusk, he is forced to spend the night in the house of a curious person who warns him of the existence of strange creatures that roam the night: malevolent demons that crave human flesh.

When he finally gets home, Tanjirou's worst nightmare comes true. His entire family has been brutally massacred, with the sole exception of his sister Nezuko, who has become a carnivorous demon. Plunged into hatred and despair, Tanjirou desperately tries to stop Nezuko from attacking others, setting out on a journey to avenge his family and find a way to make his beloved sister human again.

Source: Official Site