Did you know that there's gonna be an AoT season 4 part 3? It's gonna deviate heavily from the manga ending. Apparently it's gonna reveal the origin of the Titan worm life form. In that it's of alien origin. not like the Xenomorphs but more like Marvin the martian only goofier. It also reveals that Eren not only survives but also it's revealed that he has a new titan power. The block head titan power. It's like the attack titan except he has a block for a head. And it also gives the user the ability to be as dumb as a rock which makes sense because according to Commander Levi Eren is a bit of a block head.
It gets even crazier. The biggest twist of season 4 part 3 is that AoT is part of the Marvel cinematic universe. So yes Attack on Avengers is kind of canon. Apparently Kang the Conqueror finds Eren's head and uses his weird time travel Attack titan powers to perfect the TVA and protect the one sacred timeline. It's also gonna be a plot point in Marvel's What if season 2 in which Thanos turns Eren into a chicken for his TFC(Thanos Fried chicken) emporium. Not to get his time travel powers but because he's hungry. And it's coming exclusively on Disney+ March 32nd of 2022.
Poor Eren. He doesn't catch a break even on April 1st. The fool.