User blog comment:Gourgeist/Shingeki no Kyojin Chapter 65 Review: Dreams and Curses/@comment-26004142-20150113203554

I don't either Eren or Historia transformed in the final scene. I think Frieda is poking through. Remember, Historia didn't stick the needle into her arm (but came close). So it would not surprise me if the Titan we see in the next chapter is Frieda's titan form, not Eren's or whatever Historia's would be.