NHK has updated its episode titles
Attack on Titan The Final Season
Episode 5 Title: 宣戦布告 (Declaration of War)
Episode 6 Title: 戦鎚の巨人 (The War Hammer Titan)
Episode 7 Title: 強襲 (Assault)
Episode 8 Title: 凶弾 (Assassin's Bullet)

KEK