User blog comment:Sim0n2170/Attack on Titan Season 2 announced for SPRING 2017/@comment-5774380-20160703133127/@comment-5774380-20160703163519

@Ethan Harmicar123: Yes, it's their fault. The manga is advanced enough since since chapter 70 released in June 2015, more than a year ago (around 34 chapters per season: S1 = 1-half of 34, S2 = half of 34-70); which means the season will be airing 2 years after the manga gave them enough material to work with. They could have perfectly released Season 2 during this Spring if they weren't working on Kabaneri. It's solely their fault, and if Season 3 is released four years after S2 (meaning another two years after the end of the manga) it will be their fault too.