User blog comment:Manuel de la Fuente/Attack on Titan Season 2 pushed back to 2017/@comment-28004226-20160510211308/@comment-5774380-20160511024729

The page you linked claimed that Season 2 had been delayed "because Kodansha and Isayama said that the manga should always be four story arcs ahead of the anime" which was totally false and a stupid rumor, and I explained in my blog post the reasons.

Due to the long wait since the airing of Season 1 and the lack of official announcements, there have been rumors about a possible delay for some time, but they had only been speculating about the reasons. This is the first time that a reliable source confirms the existence of the delay and the cause obviously has nothing to do with what that rumor said.

Ah, and my comment about Kenny was for because he uses an avatar of Kenny. :P