Board Thread:Wiki/@comment-5774380-20150612023334/@comment-5774380-20150613140557

Considering what Isayama said in that interview, it's possible that it was his intention; to use this chapter as a connection between the events of the latest arc with the events of the new one; though at the end he spends much more time starting the new storyline rather than providing a conclusion to something that was already ended. We can consider this as an "epilogue" of the uprising as Raposu said, so I agree, in order to provide a definitive closure, chapter 70 will be taken as part of The Uprising arc.