Board Thread:Anime/@comment-5774380-20181014163128/@comment-37198848-20181015030757

Many shows have Seasons split in half. Looks at Vikings, it had a few Seasons split into different parts. The reason Attack on Titan isn't called Season 4 is because the events that are about to happen are still within Season 3's story arc.

Let me make this easy. I'm going to to the store to buy groceries, so the follow episodes is me gathering the grocery list, then once I've made my list, I make my way out the door...so now the show goes on a hiatus and when it returns, it shows me entering the store to buy my groceries. So basically, all of this happens within the same story arc so it's a continuation of the same story, not an entirely new arc.