According to their official press release, Aniplex of America has confirmed that they will release the first 13-episode Blu-ray box set of Fate/Zero on March 7th in North America, the same date as the Japanese release for the set.
The set will include English subtitles as well as a translation booklet for the Japanese production material. Extras such as unaired footage and and the first original soundtrack will be included. Retail price of the set is US $498.98, however, Right Stuf is offering the set for pre-order at US $369.98.
Source: Aniplex USA Press Release
