Board Thread:Manga/@comment-27321453-20180208183201/@comment-28958062-20180216160207

Unpredictable? everyone knew Amputee-kun was Eren in disguise the moment they saw him, the only reason they believed otherwise "It's too oblivious, Isayama is too good to do that"

So I wouldn't put it past Isayama to pull a cliffhanger ending or even kill everyone.