On the 53rd issue of Weekly Shonen Jump, officially dated at December 6, the popular anime, Gintama is set to return next year!
The anime had ended in March, but Shinji Takamatsu, one of the main directors of the anime, had said at an event later that month that "Gintama is absolutely not over. It hasn't even begun yet! It will definitely return."
According to some unoffcial source, Gintama is set to return in April.
Source: Kyō mo Yarareyaku via ANN, MyAnimeList