Both versions come with audio commentary of the anime, as well as a soundtrack CD as the special prize.
August 27th release, 6,300 Yen (Blu-ray disc), 5,250 Yen (DVD). Prices are inclusive of tax.
Fans in Japan can watch Chapter 1 and 2 of the movie on 2 different TV channels in September as reported in this previous posting.
Chapter 3 of Broken Blade, "Mark of the Assassin's Dagger" (凶刃ノ痕) will premier in Japanese cinemas on September 25th.
Images are from GA Graphic.