Reddit reviews Kizumonogatari I 鉄血 Episode) (Fully Production Limited Edition) [Blu-ray]

I got it on the Japanese Amazon

Is Amazon JP good enough? Tekketsu-hen | Nekketsu-hen

So far, according to amazon.co.jp, the BD doesn't come with any subtitles. ]':

Link

It's becoming more common to have Japan releases include the English subtitles especially for those that have overseas showing in English speaking countries. For whatever reason the amazon.jp listing haven't been updated to specify what tracks are available. However there are examples, such as the Love Live! The School Idol Movie listing showing the language being in Japanese (日本語) and subtitles in English (英語) under the product description.