Информация от англосканлейтеров:
The Gintama news is a one-episode TV anime special. They said it's as thanks for the movie doing so well.
It's going to be at JSAF2014. Which apparently stands for "Jump Special Anime Festival". Did that even exist before? It doesn't have any google results. "ジャンプスペシャルアニメフェスタ" (c)


АПД: те же новости на АНН