Found a handful of interviews with the people who built and designed the apps and other unique components:
Interview with Sorasu Aoki (@GOROman), main programmer of the THETA MIKU app and creator of the popular Hatsune Miku AR app Mikuture
Interview with Shigeo Yoshida, President of Yoshida Technoworks, the company that makes the beautifully designed case for the RICOH THETA HATSUNE MIKU camera
Profile of the two expert craftspeople who created the special ABITAX wool cover for the RICOH THETA HATSUNE MIKU camera