
I'm confused, why is there another chapter? or was it especially made as a special chapter or something?

Isayama said in an interview a couple weeks back that he had a page number restriction that didn't allow for him to write the ending he wanted. This chapter was just the extra pages he had to omit from 139. Had nothing to do with spoiled fans. Also its idiotic to think a writer would shit on their own work just to spite a few fans. This is his story to tell and his ending, like hell he would sacrifice a decade of work because some idiots complained.

welp in the cover she's with rias, i think that says a lot

She’s with aternitas on the main cover. It’s just that many chapters ago the cover was different. And this is something that happens with stories that go beyond 100 chapters +, the covers change depending on who the story is more focused on. And I guess the cover that shows up on updates is still the old one
wow it's crazy how far they go, it hurts to watch him struggle like that