According to Aniplex, a 10min short anime of Gintama "Shiroyasha Koutan" will be released on September 30th. It was shown at Jump Super Anime Tour 2008 and had never been released as a DVD.
It's a trailer of an imaginary Gintama movie. Gintama OVA shown at Jump Anime Tour '05 is also included in the DVD.+ More
Characters & Voice Actors

Kagura
Main
Elizabeth
Supporting
Hasegawa, Taizou
Supporting
Hijikata, Toushirou
Supporting
Katsura, Kotarou
Supporting
Kondou, Isao
Supporting
Okita, Sougo
Supporting
Sakamoto, Tatsuma
SupportingRecommended for you
Earl and Fairy
TV
25m
Chaika -The Coffin Princess-
TV
24m
Kamichama Karin
TV
24m
Kuroko's Basketball Special
Special
9m
Potemayo
TV
24m
MÄR: Märchen Awakens Romance
TV
24m
Midori Days
TV
24m
King of Nabari
TV
24m
Nagasarete Airantou
TV
24m
Naruto: Shippuden the Movie 2 -Bonds-
Movie
92m
Phi Brain: Puzzle of God 3
TV
25m