Board Thread:FAQ Board/@comment-6697950-20150424092122

This is becoming another repetitive and annoying question, so I'm going to answer it on the FAQ board.

Edit 3: A third season was announced and is in production. The release date is currently unknown.

Edit 2: Ordinal Scale movie included an after-credit scene that teased the 4th main arc. No official announcement or word on the anime studio working on the project, let alone when it would be released, yet though.

Edit: A movie has been announced for a 2017 release (see here). It's highly unlikely that there will be any word on a new anime season until after the movie is released. 