Following the premiere of the last episode of Attack on Titan’s third season in Japan, the series has confirmed a fourth and final season.
According to CrunchyRoll, the final season of Attack on Titan is scheduled to air on the Japanese NHK Entertainment channel in the Fall of 2020. You can find the brief teaser trailer here. It teases one major character behind what appears to be jail cell bars.
Notably, the third season of Attack on Titan was split into two halves. The first half aired in the Fall of 2018, and the second half began in April this year. The final episode of season three will debut tonight at 5:45 p.m. PDT.
Source: IGN.com Attack on Titan: Season 4 Will be the Final Season