We don’t know any other info at the moment. It’s sold on Amazon Japan for ¥860.
BABYMETAL had appeared in this magazine’s April 2014 issue, you may have seen them before:
It started with the release of their best selling album, METAL RESISTANCE, and ended with them performing at The Late Night show with Stephen Colbert.
Releasing a few weeks after the shows finish, this issue will feature a "complete report" on the "10 BABYMETAL BUDOKAN" shows.