This is how Wikipedia describes this anime television show:
The third season of the Attack on Titan anime television series was produced by IG Port’s Wit Studio and directed by Tetsurō Araki, and mainly covers the “Uprising” (chapter 51-70) and “Return to Shiganshina” (chapter 71-90) arcs from the original manga.
The season’s first 12 episodes were broadcast on NHK’s General TV from July 23 to October 15, 2018, before going into hiatus until April 29, 2019.
 Adult Swim began airing the English language dub on August 18, 2018.
The opening theme for the season’s first 12 episodes is “Red Swan” by Yoshiki featuring Hyde, and the ending theme is “Akatsuki no Requiem” (暁の鎮魂歌 Akatsuki no Chinkonka, lit. “Daybreak Requiem”) by Linked Horizon.
The opening theme for the second part of third season is “Shoukei to Shikabane no Michi” (憧憬と屍の道, lit. “The Path of Longing and Corpses”) performed by Linked Horizon and the second ending theme is “Name of Love” performed by Cinema Staff.
The first part of this season was my least favorite, I did not realize that this season was going to be two parts, and so during that time and when part 1 ended this season was my least favorite; but to my surprise that was just part 1, and part 2 started to my surprise and this season went from disappointing to good.
This is possibly the biggest turnaround that I can think of for a show, and part 2 brought this show back to what you expect from it.
There were a couple of amazing action moments and some nice visuals, politics, drama, et cetera.
Unfortunately part 2 was probably shorter than part 1, but it saved this season and this show.
I am curious where the next and possibly final season will go, and I am glad that part 2 saved this season with its drama and action and animation and story and surprise twists.