Board Thread:General Discussion/@comment-25222488-20150211224042/@comment-6697950-20150211230035

Why I think that it's highly unlikely for it to air this year:
 * The anime studio needs to earn back the money invested in the anime via disc and merchandise sales before they invest in a new season.
 * Even if a season is announced, it takes several months for it to be finished and get a place in an airing schedule. Last time a new season was announced, the season only started airing half a year later.
 * The next arc is only half published so far and the anime studio might be more cautious about starting work on a half-done project. Although the published part has enough content for a new season, it would end in an awful cliffhanger, unlike the first two seasons.