"Attack on Titan" Season 2 will not be aired until next year, so fans who have been waiting since Season 1 concluded in 2013 have come up with various theories on what the sophomore season might bring. What many are undoubtedly looking forward to is the disclosure of the secrets behind the powerful Reiss family.
The members of the clan are able to transform into Titans, and Season 2, according to rumors, might see Krista revealing that she's really Historia Reiss and, being the daughter of Rod Reiss, although is the heiress to the throne. She is also able to transform into one of the gigantic beasts.
Speaking of Rod Reiss, there is also speculation that he will transform in a Titan bigger than the Colossal Titans. Ymir is rumored to also have the ability to shapeshift.
According to Yibada, the Reiss family might be hiding "the coordinates," and there will be a rebellion against them. Also, a new Titan named Zeke, who is human-like but has an intelligence that exceeds humans might be introduced in "Attack on Titan" Season 2.
There are also speculations that Armin Arlelt would transform into a titan. In Chapter 84 of the manga, Levi injects him with a Titan serum to save his life and, after eating Berolt, he acquires the ability to shift in the gigantic being.
Another rumor is that Levi and Mikasa might become a couple in Season 2, and so would Eren and Krista. Fans are undoubtedly wanting for the characters to find some love in the midst of danger, but the people behind the production have not given any indication if this is going to happen at all.
According to a report on Anime News Network in July, "Attack on Titan" Season 2 will be aired in spring of 2017. The cast members who are going to reprise their roles include Yuuki Kaji as Eren, Yui Ishikawa as Mikasa, Marina Inoue as Armin, and Hiroshi Kamiya as Levi. Other characters who are expected to be in the second season are Jean, Annie, Sasha, Christa, Conny, Reiner, Bertholt, Ymir, Erwin, Hanji, and Hannes.