銀魂、とうとう銀ちゃん、オールアップ!小栗くん!2カ月、本当に楽しかったよ!万事屋の2人をはじめ、キャスト全員楽しく臨めたのは、すべて小栗くんの作る雰囲気によるものです!そして空知先生からのサプライズ色紙が飛び出して!これ、すげえ! pic.twitter.com/F8TJkmMYH7
— 福田 雄一 (@fukuda_u1) September 5, 2016
To those who are unaware, Yu Yamada is Shun Oguri's wife. They married back in 2012.
The film is written and directed by Yuichi Fukuda (Hentai Kamen). This isn't the first time the series had a movie as it previously inspired two anime movies, including the "final" Gintama movie, Gintama: Forever Odd Jobs.
The live-action Gintama movie is set for a 2017 release.
[Source: Anime News Network, Crunchyroll News]