The first season premiered on October 2015.
Avex Pictures has confirmed that a second season of the comedy “Mr. Osomatsu” is in the works and also revealed a teaser which you can see bellow:
Yoichi Fujita is returning to direct the second season; Shou Matsubara returns in charge of series composition, alongside them the voices for the Matsuno brothers are coming back as well.
Still a clear date or Season where it will air it hasn´t been revealed yet.
Via: Anime News Network