The official site for Free!
revealed that the series will be getting a new season to premiere in Summer 2018. A new episode 0 special screening has also been announced.
The franchise received its first season
in Summer 2013 followed by a second season
in Summer 2014. In addition, the franchise also received a prequel movie
in 2015, two Timeless Melody movies
in 2017, as well as a special screening episode
that just premiered on October 28, which a teaser illustration has revealed at the end.
Official site: http://tym.iwatobi-sc.com/
Official Twitter: @iwatobi_sc
Source: Moca News
Free! Dive to the Future
and Free! Dive to the Future Episode 0