The tokuten.jp website has updated (1, 2) with entries for the 2 DVD&OST bundles for Boku dake inai machi. According to it, the first dvd comes out on March 23, 2016, while the second one on June 22, 2016. Both will have 2 discs inside from which the first will be the soundtrack by Yuki Kajiura and the second the episodes. First will have episodes 1-6 and second episodes 7-12. They will come in digipack drawn by the author Sanbe Kei, special booklet and audio commentary. The above probably also apply to the BD&OST bundles which dont have pages yet.
In other news, Aniplex is offering via its online store a Yuki Kajiura liner notes booklet for those who buy the Sword Art Online Music Collection from there. The booklet will be 12-pages long and will have 8000 words in total. It also includes a Yuki Kajiura long interview and some other material.
thanks to elcazador for the news!
And dont forget, the first episode of Boku dake inai machi airs tomorrow (7/1)!!