User blog comment:Kiyuhito/K-ON! (season 1) Blu-ray box to be released in Japan/@comment-1395837-20131206060632

More detail stuff blog
 * New audio commentary "Naoko no heya (Naoko's room)". It is the talk of Naoko Yamada and voice actor.


 * New Radion! Special CD is "Radion! Vol.37".


 * New booklet cover have Azusa's Don't say "lazy" costume.

EDIT
 * Image: amazon.co.jp