According to the official website, the Blu-ray box set of Fate/Zero was announced to be released on March 7th. The price is 39,900 yen ($525). The uncut edition of the first thirteen episodes will be included. The animation will be in 1920 x 1080p and subbed in Japanese and English. Nasu Kinoko will write the scenario of an extra movie clip.
Source: Fate Zero official website
Fate/Zero: Onegai! Einzbern Soudanshitsu on MAL
