Attack on Titan, though, had an especially long break, with its first season ending in September of 2013 and Season 2 not starting until April of 2017.
The TV series’ official website has posted an announcement that Attack on Titan Season 3 will premiere in 2018, and there’s even a teaser video for the next installment already.
After dallying with side projects after Season 1 of the anime, the post-Season 2 break will be blissfully short.