The announcement followed the final episode of Season 3.
Attack on Titan Final Season return date: everything we know about the Final Chapters
Attack on Titan Final Season Final Chapter Final Part Finale: Titles Explained! - Hindustan Times
Attack on Titan: Everything We Know About the Final Season
Attack on Titan' season 4 release date delayed? Series disappears from Fall 2020 lineup; some think it's a good sign - EconoTimes
Attack on Titan' Season 4 Release Date Confirmed for December
Attack on Titan' Fourth Final Season Trailer
Attack on Titan Season 4 Trailer Reveals Final Battle and Film Officially Announced, MOSHI MOSHI NIPPON
Attack on Titan' Season 4 Part 2 release date, trailer, plot, and spoilers for the epic anime finale
Everything we know about Attack on Titan Season 4 Part 4
Attack on Titan Season 4: How many episodes will the final part feature? - Dexerto
Despite Criticism, Attack on Titan's Final Season Has Become America's Most In-Demand Show
Attack on Titan Season 4 Part 3: Release, Final Episode Date and Everything We Know
Attack On Titan Season 4: The Final Season Part 4 Preview: Release Date, Time & Where To Watch